Prosecutor: 20-year-old charged in shootings of 2 officers

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Prosecutor: 20-year-old charged in shootings of 2 officers
Officers from the St. Louis Police Department walk through a crowd of protesters outside the Ferguson Police Department, Thursday, March 12, 2015, in Ferguson, Mo. Two police officers were shot early Thursday morning in front of the Ferguson Police Department during a protest following the resignation of the city's police chief in the wake of a U.S. Justice Department report. (AP Photo/Jeff Roberson)
20-year-old Jeffrey Williams has been charged with firing the shots that struck two police officers at a protest outside the police station in Ferguson. Williams has acknowledged firing the shots, but St. Louis County Prosecutor Robert McCulloch says there is some evidence that indicates he may have been shooting at someone else.
WASHINGTON, USA - MARCH 14: Protestors march in silence during a Black Lives Matter protest in Saint Louis, USA on March 14, 2015. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, USA - MARCH 14: Protestors march in silence during a Black Lives Matter protest in Saint Louis, USA on March 14, 2015. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, USA - MARCH 14: Protestors march in silence during a Black Lives Matter protest in Saint Louis, USA on March 14, 2015. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, USA - MARCH 14: Protestors march in silence during a Black Lives Matter protest in Saint Louis, USA on March 14, 2015. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
St. Louis Police Department Lt. Jerry Lohr, front, walks through a crowd of protesters trying to get them to move out of the street outside the Ferguson Police Department, Thursday, March 12, 2015, in Ferguson, Mo. Two police officers were shot early Thursday morning in front of the Ferguson Police Department during a protest following the resignation of the city's police chief in the wake of a U.S. Justice Department report. (AP Photo/Jeff Roberson)
Protesters gather across the street from the Ferguson Police Department, Thursday, March 12, 2015, in Ferguson, Mo. Two police officers were shot early Thursday morning in front of the Ferguson Police Department during a protest following the resignation of the city's police chief in the wake of a U.S. Justice Department report. (AP Photo/Jeff Roberson)
People take part in a candlelight vigil Thursday, March 12, 2015, in Ferguson, Mo. Two police officers were shot early Thursday morning in front of the Ferguson Police Department during a protest following the resignation of the city's police chief in the wake of a U.S. Justice Department report. (AP Photo/Jeff Roberson)
WASHINGTON, USA - MARCH 12: Protestors gather and shout slogans in front of the Ferguson Police Department during ongoing protests after the Justice Department released their report exposing corruption in the police department and court system of Ferguson, USA on March 12, 2015. Officials, including the Chief of Police, have been forced to resign after the release of the report. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, USA - MARCH 12: A protestor lays down in the street in front of the Ferguson Police Department during ongoing protests after the Justice Department released their report exposing corruption in the police department and court system of Ferguson, USA on March 12, 2015. Officials, including the Chief of Police, have been forced to resign after the release of the report. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, USA - MARCH 12: Protestors hold banners in front of the Ferguson Police Department during ongoing protests after the Justice Department released their report exposing corruption in the police department and court system of Ferguson, USA on March 12, 2015. Officials, including the Chief of Police, have been forced to resign after the release of the report. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
FERGUSON, MO - MARCH 12: Law enforcement officials secure the crime scene and continue to search for evidence outside the police station after two officers were shot and wounded during last night's protest on March 12, 2015 in Ferguson, Missouri. Demonstrators had gathered outside the station to celebrate and protest after learning the city's police chief would be stepping down following the release of a Justice Department report that disparaged the department. Ferguson has faced many violent protests since the August shooting death of Michael Brown by a Ferguson police officer. (Photo by Scott Olson/Getty Images)
FERGUSON, MO - MARCH 12: Police block off an area on South Florissant Road outside the Ferguson Police Department on March12, 2015 in Ferguson, MO. Two police officers were shot and wounded in front of the Ferguson Police department overnight as protestors gathered after the resignation of Ferguson Police Chief Tom Jackson. Both officers were taken to hospital with serious injuries but were reported to be concious. (Photo by Michael B. Thomas/Getty Images)
Police shine a light on and photograph a helmet as they investigate the scene where two police officers were shot outside the Ferguson Police Department Thursday, March 12, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
Police shine a light on a helmet as they investigate the scene where two police officers were shot outside the Ferguson Police Department Thursday, March 12, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
Police shine a light on a helmet as they investigate the scene where two police officers were shot outside the Ferguson Police Department Thursday, March 12, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
Police gather outside the Ferguson Police Department Thursday, March 12, 2015, after two police officers were shot according to witnesses in Ferguson, Mo. (AP Photo/Jeff Roberson)
Police investigate the scene where two police officers were shot outside the Ferguson Police Department Thursday, March 12, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
Police canvass the area as they investigate the scene where two police officers were shot outside the Ferguson Police Department Thursday, March 12, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
Police stand watch outside the Ferguson Police Department where two police officers were shot Thursday, March 12, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
Police investigate the scene where two police officers were shot outside the Ferguson Police Department Thursday, March 12, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
FERGUSON, MO - MARCH 11: Protestors demonstrate outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Protestors demonstrate outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Protestors demonstrate outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Protestors demonstrate outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: A St. Louis County Police officer stands alert in riot gear during a protests outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Protestors demonstrate outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Police officers stand on alert during a protests outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Protestors hang a sign during a protest outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Children draw on the sidewalk with chalk outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: A protestor holds a sign during a protest outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Police in riot gear respond to demonstrators blocking traffic during a protest outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Protestors hold up their hands in front of police car during a protest outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Protestors demonstrate by sitting on a police car during a protest outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - MARCH 11: Protestors sit in the street outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
FERGUSON, MO - NOVEMBER 20: Ferguson Chief of Police Tom Jackson speaks to a television news crew across from the police station on November 20, 2014 in Ferguson, Missouri. Ferguson police have been faced with months of sometimes violent protests following the shooting death of Michael Brown by Ferguson police officer Darren Wilson on August 9. A grand jury is expected to decide this month if Wilson should be charged in the shooting. (Photo by Scott Olson/Getty Images)
FERGUSON, MO - MARCH 11: Police in riot gear respond to demonstrators blocking traffic during a protest outside the Ferguson Police Department on March11, 2015 in Ferguson, MO. Protests erupted after the announcement of the resignation of Ferguson Police Chief Tom Jackson earlier in the day. (Photo by Michael B. Thomas/Getty Images)
A protester yells at police outside the Ferguson Police Department, Wednesday, March 11, 2015, in Ferguson, Mo. Earlier in the day, the resignation of Ferguson police chief Thomas Jackson was announced in the wake of a scathing Justice Department report prompted by the fatal shooting of an unarmed black 18-year-old by a white police officer. (AP Photo/Jeff Roberson)
Police and protesters square off outside the Ferguson Police Department, Wednesday, March 11, 2015, in Ferguson, Mo. Earlier in the day, the resignation of Ferguson police chief Thomas Jackson was announced in the wake of a scathing Justice Department report prompted by the fatal shooting of an unarmed black 18-year-old by a white police officer. (AP Photo/Jeff Roberson)
Police and protesters square off outside the Ferguson Police Department, Wednesday, March 11, 2015, in Ferguson, Mo. Earlier in the day, the resignation of Ferguson police chief Thomas Jackson was announced in the wake of a scathing Justice Department report prompted by the fatal shooting of an unarmed black 18-year-old by a white police officer. (AP Photo/Jeff Roberson)
Police arrest a demonstrator outside the Ferguson Police Department, Wednesday, March 11, 2015, in Ferguson, Mo. Earlier in the day, the resignation of Ferguson police chief Thomas Jackson was announced in the wake of a scathing Justice Department report prompted by the fatal shooting of an unarmed black 18-year-old by a white police officer. (AP Photo/Jeff Roberson)
Ferguson officials are telling reporters that Thomas Jackson will step down as police chief by the end of the day, but we've heard that before.
A demonstrator chants during a rally in downtown Manhattan in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
Demonstrators march in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
City of Ferguson says resignation of Police Chief Thomas Jackson is effective March 19 http://t.co/JhqBrTa66U http://t.co/ku7KOYBEzq
Demonstrators chant at Freedom Plaza in Washington, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/Jose Luis Magana)
Demonstrators hold hands as they pray at the George Gordon Meade Memorial in Washington, Saturday, Dec. 13, 2014, during the Justice for All rally. More than 10,000 protesters are converging on Washington in an effort to bring attention to the deaths of unarmed black men at the hands of police. Civil rights organizations are holding a march to the Capitol on Saturday with the families of Michael Brown and Eric Garner, two unarmed black men who died in incidents with white police officers. (AP Photo/Jose Luis Magana)
Demonstrators march in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
Demonstrators march on Pennsylvania Avenue toward Capitol Hill in Washington, Saturday, Dec. 13, 2014, during the Justice for All rally. More than 10,000 protesters are converging on Washington in an effort to bring attention to the deaths of unarmed black men at the hands of police. Civil rights organizations are holding a march to the Capitol on Saturday with the families of Michael Brown and Eric Garner, two unarmed black men who died in incidents with white police officers. (AP Photo/Jose Luis Magana)
Rev. Al Sharpton speaks at Freedom plaza in Washington, Saturday, Dec. 13, 2014, during the Justice for All march and rally. More than 10,000 protesters are converging on Washington in an effort to bring attention to the deaths of unarmed black men at the hands of police. Civil rights organizations are holding a march to the Capitol on Saturday with the families of Michael Brown and Eric Garner, two unarmed black men who died in incidents with white police officers. (AP Photo/Jose Luis Magana)
A demonstrators holds a banner during a prayer in Washington, Saturday, Dec. 13, 2014, at the Justice for All rally. More than 10,000 protesters are converging on Washington in an effort to bring attention to the deaths of unarmed black men at the hands of police. Civil rights organizations are holding a march to the Capitol on Saturday with the families of Michael Brown and Eric Garner, two unarmed black men who died in incidents with white police officers. (AP Photo/Jose Luis Magana)
Demonstrators march on Pennsylvania Avenue toward Capitol Hill in Washington, Saturday, Dec. 13, 2014, during the Justice for All march. More than 10,000 protesters are converging on Washington in an effort to bring attention to the deaths of unarmed black men at the hands of police. Civil rights organizations are holding a march to the Capitol on Saturday with the families of Michael Brown and Eric Garner, two unarmed black men who died in incidents with white police officers. (AP Photo/Jose Luis Magana)
Demonstrators march in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
WASHINGTON, D.C. - DECEMBER 13: Reverend Al Sharpton speaks during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, D.C. - DECEMBER 13: Michael Brown Sr., father of Michael Brown Jr., protest during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, D.C. - DECEMBER 13: Michael Brown Sr., father of Michael Brown Jr., protest during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C.(Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, D.C. - DECEMBER 13: People gather to protest against police violence during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, D.C. - DECEMBER 13: People gather to protest against police violence during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, D.C. - DECEMBER 13: People gather to protest against police violence during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
WASHINGTON, D.C. - DECEMBER 13: People gather to protest against police violence during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
UNITED STATES - DECEMBER 13: Thousands of protesters participate in the 'Justice For All' march against police violence on Pennsylvania Avenue in Washington on Saturday, Dec. 13, 2014. Protesters held a rally at Freedom Plaza before marching to the U.S. Capitol. (Photo By Bill Clark/CQ Roll Call)
Reverend Al Sharpton (R) and Lesley McSpadden (C-red hair), mother of Ferguson shooting victim Michael Brown, lead the 'Justice For All' march in Washington, DC, December 13, 2014. Thousands of people descended on Washington to demand justice Saturday for black men who have died at the hands of white police, the latest in weeks of demonstrations across the United States. AFP PHOTO/JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
WASHINGTON, D.C. - DECEMBER 13: People gather to protest against police violence during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
UNITED STATES - DECEMBER 13: Thousands of protesters participate in the 'Justice For All' march against police violence on Pennsylvania Avenue in Washington on Saturday, Dec. 13, 2014. Protesters held a rally at Freedom Plaza before marching to the U.S. Capitol. (Photo By Bill Clark/CQ Roll Call)
WASHINGTON, D.C. - DECEMBER 13: People gather to protest against police violence during the national march after two grand juries decided not to indict the police officers involved in the deaths of Michael Brown in Ferguson, Mo. and Eric Garner in New York, on December 13, 2014, in Washington, D.C. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
DENVER, CO - DECEMBER 12: Denver School of the Arts student, Zamir Almazbek, draws I Can't Breath on the sidewalk at the City Park Pavilion December 12, 2014. Denver Public School students, organizers and supporters gathered at City Park and then marched towards downtown protesting police brutality in Ferguson, New York and Denver. (Photo by Andy Cross/The Denver Post via Getty Images)
Michael Brown Sr. (L), the father of Ferguson shooting victim Michael Brown, stands with US Senator Kirsten Gillibrand (C), D-New York, and Reverend Al Sharpton (R) during the 'Justice For All' march in Washington, DC, December 13, 2014. Thousands of people descended on Washington to demand justice Saturday for black men who have died at the hands of white police, the latest in weeks of demonstrations across the United States. AFP PHOTO/JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
Demonstrators march over the inbound lane of the Brooklyn Bridge in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
Demonstrators march in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
Demonstrators march in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
Demonstrators march in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
Demonstrators march on Pennsylvania Avenue toward Capitol Hill in Washington, Saturday, Dec. 13, 2014, during the Justice for All rally. More than 10,000 protesters are converging on Washington in an effort to bring attention to the deaths of unarmed black men at the hands of police. Civil rights organizations are holding a march to the Capitol on Saturday with the families of Michael Brown and Eric Garner, two unarmed black men who died in incidents with white police officers. (AP Photo/Jose Luis Magana)
Demonstrators march in New York, Saturday, Dec. 13, 2014, during the Justice for All rally and march. In the past three weeks, grand juries have decided not to indict officers in the chokehold death of Eric Garner in New York and the fatal shooting of Michael Brown in Ferguson, Mo. The decisions have unleashed demonstrations and questions about police conduct and whether local prosecutors are the best choice for investigating police. (AP Photo/John Minchillo)
Demonstrators march on Pennsylvania Avenue toward Capitol Hill in Washington, Saturday, Dec. 13, 2014, during the Justice for All rally. More than 10,000 protesters are converging on Washington in an effort to bring attention to the deaths of unarmed black men at the hands of police. Civil rights organizations are holding a march to the Capitol on Saturday with the families of Michael Brown and Eric Garner, two unarmed black men who died in incidents with white police officers. (AP Photo/Jose Luis Magana)
Demonstrators march on Pennsylvania Avenue toward Capitol Hill in Washington, Saturday, Dec. 13, 2014, during the Justice for All rally. More than 10,000 protesters are converging on Washington in an effort to bring attention to the deaths of unarmed black men at the hands of police. Civil rights organizations are holding a march to the Capitol on Saturday with the families of Michael Brown and Eric Garner, two unarmed black men who died in incidents with white police officers. (AP Photo/Jose Luis Magana)
NEW YORK, NY - DECEMBER 12: Faith leaders from communities throughout New York City lead a demonstration and prayer vigil on the steps of City Hall in protest to the Staten Island, New York grand jury's recent decision not to indict a police officer involved in the chokehold death of Eric Garner in July on December 12, 2014 in New York City. Protests and demonstrations have continued throughout the nation since the Grand Jury verdict was announced last week. (Photo by Andrew Burton/Getty Images)
About 100 pro-police demonstrators stand hold signs outside the Ferguson Police Department as the shadows of counter demonstrators are seen on the street Sunday, March 15, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
St. Louis County Prosecutor Robert McCulloch speaks during a news conference Sunday, March 15, 2015, in Clayton, Mo. McCulloch said 20-year-old Jeffrey Williams has been charged in the shooting of two St. Louis-area officers. (AP Photo/Jeff Roberson)
Pro-police protesters are seen in the glasses of a counter protester outside the Ferguson Police Department Sunday, March 15, 2015, in Ferguson, Mo. (AP Photo/Jeff Roberson)
FERGUSON, MO - MARCH 15: A demonstrator rips an American flag during a protest outside the Ferguson police station on March 15, 2015 in Ferguson, Missouri. The St. Louis County prosecutor announced Sunday that Jeffrey Williams, a 20-year-old black male, was arrested for the shooting of two police officers who were working outside the Ferguson police station during a protest last week. (Photo by Scott Olson/Getty Images)
FERGUSON, MO - MARCH 15: Pro-police demonstrators argue with anti-police demonstrators during a protest outside the Ferguson police station on March 15, 2015 in Ferguson, Missouri. The St. Louis County prosecutor announced Sunday that Jeffrey Williams, a 20-year-old black male, was arrested for the shooting of two police officers who were working outside the Ferguson police station during a protest last week. (Photo by Scott Olson/Getty Images)
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CLAYTON, Mo. (AP) -- Authorities said a man charged in the shooting of two police officers last week during a demonstration outside the Ferguson Police Department had attended the protest earlier that night, although multiple activists said he wasn't a consistent fixture in their tight-knit group.

St. Louis County Prosecutor Robert McCulloch said Sunday in announcing the charges that 20-year-old suspect Jeffrey Williams told authorities he was firing at someone with whom he was in a dispute.

"We're not sure we completely buy that part of it," McCulloch said, adding that there might have been other people in a vehicle Williams is accused of firing from.

Williams is charged with two counts of first-degree assault, one count of firing a weapon from a vehicle and three counts of armed criminal action. McCulloch said the investigation is ongoing.

The police officers were shot early Thursday as a late-night demonstration began to break up following the resignation of Ferguson Police Chief Tom Jackson in the wake of a Justice Department report that found widespread racial bias in the police department.

"He was out there earlier that evening as part of the demonstration," McCulloch said of Williams.

But several activists who've been involved in the protests since the Aug. 9 fatal shooting of 18-year-old Michael Brown by a Ferguson police officer told The Associated Press they were not familiar with Williams.

Williams used a handgun that matches the shell casings at the scene, McCulloch said. He also said tips from the public led to the arrest.

Williams, who St. Louis County Police Chief Jon Belmar said is black, is being held on $300,000 bond. County police spokesman Brian Schellman said he didn't know whether Williams had an attorney or when he'd appear in court. A message left at the St. Louis County Justice Center was not immediately returned.

Brittany Ferrell, 26, a protest leader with the group Millennial Activists United, had just left a meeting with other leaders Sunday when word of the arrest circulated. She said no one in the group knew Williams, and they checked with other frequent protesters - who also hadn't heard of him.

Ferrell suspected McCulloch tried to cast him as a protester to reflect negatively on the movement.

"This is a fear tactic," she said. "We are very tight-knit. We know each other by face if not by name, and we've never seen this person before."

John Gaskin, a St. Louis NAACP leader, said of Williams, "I don't know him. I've never seen him."

Williams, a north St. Louis County resident, was on probation for receiving stolen property, McCulloch said. "I think there was a warrant out for him on that because he had neglected to report for the last seven months to his probation officer," he said.

Online state court records show a man by the name of Jeffrey Williams at the address police provided Sunday was charged in 2013 with receiving stolen property and fraudulent use of a credit/debit device.

There was no answer at the door at the small, ranch-style home. Several neighbors, including the people just across the street, said they didn't know Williams. But one, 26-year-old Jason White, said "He was cool. I never heard of him doing nothing to nobody."

Attorney General Eric Holder said in a statement Sunday that the arrest "sends a clear message that acts of violence against our law enforcement personnel will never be tolerated" and praised "significant cooperation between federal authorities and the St. Louis County Police Department."

Belmar previously called the shooting "an ambush," and had said the two officers easily could have died, like two New York City officers who were shot and killed in their police cruiser in December.

A 41-year-old St. Louis County officer was shot in the right shoulder, the bullet exiting through his back. A 32-year-old officer from Webster Groves was wearing a riot helmet with the face shield up. He was shot in the right cheek, just below the eye, and the bullet lodged behind his ear.

The officers were released from the hospital later Thursday, and Belmar said Sunday that they "were getting better, not getting worse."

The Ferguson police department has been a national focal point since Brown, who was black and unarmed, was killed by now-former police officer Darren Wilson. A grand jury led by McCulloch declined to indict Wilson in November, and Wilson was cleared of civil rights charges by a Justice Department report released March 4.

But a separate Justice Department report found widespread racial bias in the city's policing and in a municipal court system driven by profit extracted from mostly black and low-income residents.

Six Ferguson officials, including Jackson, have resigned or been fired since the federal report was released.

Ferguson Mayor James Knowles III and the City Council issued a joint statement Sunday saying they support "peaceful protesting" but "will not allow, nor tolerate, the destructive and violent actions of a few to disrupt our unifying actions."

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St Louis County PD Live Tweets - Jeffrey Williams Arrest
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Prosecutor: 20-year-old charged in shootings of 2 officers
Mugshot of Jeffrey Williams, 20, charged with shooting two cops in Ferguson, MO, per St Louis County police http://t.co/H9O1MtPgF5
Jeffrey WIlliams: 20 yrs old. Suspect is on probation for receiving stolen property. He did acknowledge firing the shots. #Ferguson
"At this point it appears that only one person was firing shots, but the investigation continues because others may have been with him."
"There is a lot of video out there and I hope there is a lot more than can be provided to investigators." #Ferguson #stl
Bob McCollough: Members of the public and community helped solve this case. #FergusonShooting #ferguson #stl
An arrest has been made in connection with the shooting of two police officers in #Ferguson. Thank you for your help. #saferstl
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