Las Vegas shooting investigation ends without clear motive for gunman

Investigators still have not been able to discern a motive for Stephen Paddock, who opened fire on 22,000 concertgoers from his perch at a hotel in Las Vegas last October. 

“By all accounts Stephen Paddock was an unremarkable man,” Las Vegas Metropolitan Police Department Sheriff Joseph Lombardo said during a press conference Friday announcing his department’s release of its final criminal investigative report. 

Paddock, a 64-year-old retiree, was responsible for the worst mass shooting in modern American history. He fired more than 1,000 rounds into the crowd gathered to enjoy the Route 91 Harvest country music festival and killed 58 people, injuring some 800 more.

Although Lombardo said there were signs Paddock had “a troubled mind” prior to his shooting rampage, he stated that none of those were enough to concern law enforcement.

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Heartbreaking scenes from Las Vegas shooting vigils and memorial services
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Heartbreaking scenes from Las Vegas shooting vigils and memorial services
LAS VEGAS, NV - OCTOBER 2: Mourners attend a candlelight vigil at the corner of Sahara Avenue and Las Vegas Boulevard for the victims of Sunday night's mass shooting, October 2, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed more than 50 people and injured more than 500 people after he opened fire on a large crowd at the Route 91 Harvest Festival, a three-day country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)
NASHVILLE, TN - OCTOBER 02: People gather at the Ascend Amphitheater for a vigil honoring the victims of the mass shooting in Las Vegas on October 2, 2017 in Nashville, Tennessee. At least 58 people were killed and 500 wounded at the Route 91 Harvest Festival in Las Vegas Sunday night. (Photo by Joe Buglewicz/Getty Images)
LAS VEGAS, NEVADA - OCTOBER 2: UNLV students reflect on words of wisdom dispersed during a candle light vigil for the victims of the mass shootings that killed 59 people and injured more than 525, in Las Vegas, Nevada, on Oct. 2, 2017. (Photo by Marcus Yam/Los Angeles Times via Getty Images)
NASHVILLE, TN - OCTOBER 02: People gather at the Ascend Amphitheater for a vigil honoring the victims of the mass shooting in Las Vegas on October 2, 2017 in Nashville, Tennessee. At least 58 people were killed and 500 wounded at the Route 91 Harvest Festival in Las Vegas Sunday night. (Photo by Joe Buglewicz/Getty Images)
NASHVILLE, TN - OCTOBER 02: People hand out candles at the Ascend Amphitheater for a vigil honoring the victims of the mass shooting in Las Vegas on October 2, 2017 in Nashville, Tennessee. At least 58 people were killed and 500 wounded at the Route 91 Harvest Festival in Las Vegas Sunday night. (Photo by Joe Buglewicz/Getty Images)
NASHVILLE, TN - OCTOBER 02: Singers/Songwriters Alison Krauss and The Cox Family perform during Nashville Candelight Vigil For Las Vegas at Ascend Amphitheater on October 2, 2017 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images)
NASHVILLE, TN - OCTOBER 02: People light candles at the Ascend Amphitheater for a vigil honoring the victims of the mass shooting in Las Vegas on October 2, 2017 in Nashville, Tennessee. At least 58 people were killed and 500 wounded at the Route 91 Harvest Festival in Las Vegas Sunday night. (Photo by Joe Buglewicz/Getty Images)
A woman mourns during an interfaith memorial service for victims of the Route 91 music festival mass shooting outside the Mandalay Bay Resort and Casino in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Lucy Nicholson
People mourn during an interfaith memorial service for victims of the Route 91 music festival mass shooting outside the Mandalay Bay Resort and Casino in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Lucy Nicholson
People mourn after an interfaith memorial service for victims of the Route 91 music festival mass shooting outside the Mandalay Bay Resort and Casino in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Lucy Nicholson
NASHVILLE, TN - OCTOBER 02: People gather at the Ascend Amphitheater for a vigil honoring the victims of the mass shooting in Las Vegas on October 2, 2017 in Nashville, Tennessee. At least 58 people were killed and 500 wounded at the Route 91 Harvest Festival in Las Vegas Sunday night. (Photo by Joe Buglewicz/Getty Images)
NASHVILLE, TN - OCTOBER 02: Sophie Cass, 10, hands out candles at the Ascend Amphitheater for a vigil honoring the victims of the mass shooting in Las Vegas on October 2, 2017 in Nashville, Tennessee. At least 58 people were killed and 500 wounded at the Route 91 Harvest Festival in Las Vegas Sunday night. (Photo by Joe Buglewicz/Getty Images)
LAS VEGAS, NV - OCTOBER 02: The Rev. Paul Goulet (L) and the Rev. David Shearin light candles during a prayer vigil outside Las Vegas City Hall in response to Sunday's mass shooting on October 2, 2017 in Las Vegas, Nevada. A lone gunman opened fire on the Route 91 Harvest country music festival on October 1 leaving 59 dead and hundreds wounded. (Photo by Ethan Miller/Getty Images)
LAS VEGAS, NV - OCTOBER 02: A stack of #VegasStrong flyers are displayed during a prayer vigil outside Las Vegas City Hall in response to Sunday's mass shooting on October 2, 2017 in Las Vegas, Nevada. A lone gunman opened fire on the Route 91 Harvest country music festival on October 1 leaving 59 dead and hundreds wounded. (Photo by Ethan Miller/Getty Images)
NASHVILLE, TN - OCTOBER 02: People gather during a candlelight vigil for victims of the Las Vegas shooting at Ascend Amphitheater on October 2, 2017 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images)
NASHVILLE, TN - OCTOBER 02: People gather during a candlelight vigil for victims of the Las Vegas shooting at Ascend Amphitheater on October 2, 2017 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images)
NASHVILLE, TN - OCTOBER 02: General view during Nashville Candelight Vigil For Las Vegas at Ascend Amphitheater on October 2, 2017 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images)
LAS VEGAS, NV - OCTOBER 02: Dominic De Patta of Nevada holds a candle and a #VegasStrong flyer during a prayer vigil outside Las Vegas City Hall in response to Sunday's mass shooting on October 2, 2017 in Las Vegas, Nevada. A lone gunman opened fire on the Route 91 Harvest country music festival on October 1, leaving 59 dead and hundreds wounded. (Photo by Ethan Miller/Getty Images)
NASHVILLE, TN - OCTOBER 02: People gather during a candlelight vigil for victims of the Las Vegas shooting at Ascend Amphitheater on October 2, 2017 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images)
People mourn after an interfaith memorial service for victims of the Route 91 music festival mass shooting outside the Mandalay Bay Resort and Casino in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Lucy Nicholson
A girl attends an interfaith memorial service for victims of the Route 91 music festival mass shooting outside the Mandalay Bay Resort and Casino in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Lucy Nicholson
Pastor William McCurdy (C) attends a prayer vigil, in honor of those affected by the shooting on the Las Vegas Strip, in front of Las Vegas City Hall in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Las Vegas Sun/Steve Marcus
People mourn during an interfaith memorial service for victims of the Route 91 music festival mass shooting outside the Mandalay Bay Resort and Casino in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Lucy Nicholson
LAS VEGAS, NEVADA - OCTOBER 2: UNLV students and their families gather during a candle light vigil for the victims of the mass shootings that killed 59 people and injured more than 525, in Las Vegas, Nevada, on Oct. 2, 2017. (Photo by Marcus Yam/Los Angeles Times via Getty Images)
LAS VEGAS, NEVADA - OCTOBER 2: A UNLV student reflects on the message given during a candle light vigil for the victims of the mass shootings that killed 59 people and injured more than 525, in Las Vegas, Nevada, on Oct. 2, 2017. (Photo by Marcus Yam/Los Angeles Times via Getty Images)
LAS VEGAS, NV - OCTOBER 2: Mourners attend a candlelight vigil at the corner of Sahara Avenue and Las Vegas Boulevard for the victims of Sunday night's mass shooting, October 2, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed more than 50 people and injured more than 500 people after he opened fire on a large crowd at the Route 91 Harvest Festival, a three-day country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)
LAS VEGAS, NV - OCTOBER 02: The Rev. David Shearin (L) and the Rev. Mike Hatch hold candles as they pray during a prayer vigil outside Las Vegas City Hall in response to Sunday's mass shooting on October 2, 2017 in Las Vegas, Nevada. A lone gunman opened fire on the Route 91 Harvest country music festival on October 1 leaving 59 dead and hundreds wounded. (Photo by Ethan Miller/Getty Images)
LAS VEGAS, NV - OCTOBER 2: Mourners attend a candlelight vigil at the corner of Sahara Avenue and Las Vegas Boulevard for the victims of Sunday night's mass shooting, October 2, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed more than 50 people and injured more than 500 people after he opened fire on a large crowd at the Route 91 Harvest Festival, a three-day country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)
NASHVILLE, TN - OCTOBER 02: People gather during a candlelight vigil for victims of the Las Vegas shooting at Ascend Amphitheater on October 2, 2017 in Nashville, Tennessee. (Photo by Rick Diamond/Getty Images)
LAS VEGAS, NV - OCTOBER 02: Jon Dimaya (C) of Nevada, a rapid response team nurse at Sunrise Hospital & Medical Center, and his sons Ethan Dimaya (L) and Gryffin Dimaya (R) hold signs during a prayer vigil outside Las Vegas City Hall in response to Sunday's mass shooting on October 2, 2017 in Las Vegas, Nevada. A lone gunman opened fire on the Route 91 Harvest country music festival on October 1, leaving 59 dead and hundreds wounded. (Photo by Ethan Miller/Getty Images)
NASHVILLE, TN - OCTOBER 02: People gather at the Ascend Amphitheater for a vigil honoring the victims of the mass shooting in Las Vegas on October 2, 2017 in Nashville, Tennessee. At least 58 people were killed and 500 wounded at the Route 91 Harvest Festival in Las Vegas Sunday night. (Photo by Joe Buglewicz/Getty Images)
A man mourns during an interfaith memorial service for victims of the Route 91 music festival mass shooting outside the Mandalay Bay Resort and Casino in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Lucy Nicholson
Alexander Wells, 9, attends a prayer vigil, in honor of those affected by the shooting on the Las Vegas Strip, in front of Las Vegas City Hall in Las Vegas, Nevada, U.S. October 2, 2017. REUTERS/Las Vegas Sun/Steve Marcus
LAS VEGAS, NV - OCTOBER 2: Mourners light candles during a vigil at the corner of Sahara Avenue and Las Vegas Boulevard for the victims of Sunday night's mass shooting, October 2, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed more than 50 people and injured more than 500 people after he opened fire on a large crowd at the Route 91 Harvest Festival, a three-day country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)
LAS VEGAS, NV - OCTOBER 2: Mourners attend a candlelight vigil at the corner of Sahara Avenue and Las Vegas Boulevard for the victims of Sunday night's mass shooting, October 2, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed more than 50 people and injured more than 500 people after he opened fire on a large crowd at the Route 91 Harvest Festival, a three-day country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)
LAS VEGAS, NV - OCTOBER 2: Mourners attend a candlelight vigil at the corner of Sahara Avenue and Las Vegas Boulevard for the victims of Sunday night's mass shooting, October 2, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed more than 50 people and injured more than 500 people after he opened fire on a large crowd at the Route 91 Harvest Festival, a three-day country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)
LAS VEGAS, NV - OCTOBER 2: Mourners attend a candlelight vigil at the corner of Sahara Avenue and Las Vegas Boulevard for the victims of Sunday night's mass shooting, October 2, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed more than 50 people and injured more than 500 people after he opened fire on a large crowd at the Route 91 Harvest Festival, a three-day country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)
LAS VEGAS, NEVADA - OCTOBER 2: UNLV students reflect on words of wisdom dispersed during a candle light vigil for the victims of the mass shootings that killed 59 people and injured more than 525, in Las Vegas, Nevada, on Oct. 2, 2017. (Photo by Marcus Yam/Los Angeles Times via Getty Images)
LAS VEGAS, NV - OCTOBER 02: A music group performs during a vigil at Guardian Angel Cathedral for the victims of the Route 91 Harvest country music festival shootings on October 2, 2017 in Las Vegas, Nevada. Lone gunman Stephan Paddock, 64, of Mesquite, Nevada opened fire on festival attendees leaving at least 59 dead and over 500 injured before killing himself. The investigation is ongoing. (Photo by Denise Truscello/Getty Images)
LAS VEGAS, NV - OCTOBER 02: A woman touches a staue of the Blessed Mother Mary during a vigil at Guardian Angel Cathedral for the victims of the Route 91 Harvest country music festival shootings on October 2, 2017 in Las Vegas, Nevada. Lone gunman Stephan Paddock, 64, of Mesquite, Nevada opened fire on festival attendees leaving at least 59 dead and over 500 injured before killing himself. The investigation is ongoing. (Photo by Denise Truscello/Getty Images)
LAS VEGAS, NV - OCTOBER 02: A vigil on the Las Vegas strip for the victims of the Route 91 Harvest country music festival shootings on October 2, 2017 in Las Vegas, Nevada. Lone gunman Stephan Paddock, 64, of Mesquite, Nevada opened fire on festival attendees leaving at least 59 dead and over 500 injured before killing himself. The investigation is ongoing. (Photo by Denise Truscello/Getty Images)
LAS VEGAS, NV - OCTOBER 02: Aryanna Williams, 6, and Mickey Deustch, 8, of Las Vegas, Nevada attend a vigil on the Las Vegas strip for the victims of the Route 91 Harvest country music festival shootings on October 2, 2017 in Las Vegas, Nevada. Lone gunman Stephan Paddock, 64, of Mesquite, Nevada opened fire on festival attendees leaving at least 59 dead and over 500 injured before killing himself. The investigation is ongoing. (Photo by Denise Truscello/Getty Images)
LAS VEGAS, NV - OCTOBER 2: Mourners attend a candlelight vigil at the corner of Sahara Avenue and Las Vegas Boulevard for the victims of Sunday night's mass shooting, October 2, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed more than 50 people and injured more than 500 people after he opened fire on a large crowd at the Route 91 Harvest Festival, a three-day country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)
A sign is pictured at a vigil on the Las Vegas strip following a mass shooting at the Route 91 Harvest Country Music Festival in Las Vegas, Nevada, U.S., October 2, 2017. Picture taken October 2, 2017. REUTERS/Chris Wattie
A police officer writes a message on a sign at a vigil on the Las Vegas strip following a mass shooting at the Route 91 Harvest Country Music Festival in Las Vegas, Nevada, U.S., October 2, 2017. Picture taken October 2, 2017. REUTERS/Chris Wattie
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Police found Paddock dead from a self-inflicted gunshot wound in his Mandalay Bay hotel room after the incident, with multiple weapons strewn about.

The Las Vegas Metropolitan Police Department’s final criminal investigative report on the shooting contains shell casing analysis, interviews with survivors, a financial report and interviews with Paddock’s family and doctors. The 187-page document was made available Friday on the department’s website.

The sheriff declined to comment on actions taken by individual officers who responded. The report also does not offer suggestions on security measures Mandalay Bay hotel management could have taken to prevent such a tragedy.

On the question of motive, Lombardo said investigators simply had to make their best “educated guess” based on available evidence. Unlike other mass shooters, Paddock left behind no political or social manifesto to explain himself, nor did he have any known ties to extremist groups. 

The sheriff said he believes Paddock was driven by a number of factors, including recent gambling losses. His habit was self-funded, however, and he was not indebted to anyone at the time of his death. 

The FBI’s behavioral analysis unit is expected to release a report on Paddock’s psychopathology by the end of the year.

Lombardo noted toward the end of the press conference that Las Vegas was a “safe tourist community,” but he cautioned that a similar incident could happen again.

Watch the full press conference: 
 

This story is developing. Check back for updates.

  • This article originally appeared on HuffPost.
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