Will Smith, a prominent member of the New Orleans Saints team that won the NFL's Super Bowl in 2010, was killed by a gunman who shot the retired football player after ramming into his car near the city's famed French Quarter, police said on Sunday.
Investigators were trying to determine whether the shooting, which also wounded Smith's wife, was a case of road rage or whether there was some other motive, police said.
The suspect, Cardell Hayes, 28, was arrested and charged with second-degree murder, the New Orleans Police Department said in a Twitter message.
"Our investigation continues as to the motive of this shooting and whether or not Smith and Hayes knew each other prior to this incident," Police Superintendent Michael Harrison said during a news conference on Sunday.
A man with the same name as Hayes sued the city of New Orleans over the police shooting of his mentally ill father in 2005, winning a settlement six years later.
The Times-Picayune newspaper reported that Smith had dined on Saturday night with one of the police officers named in the federal lawsuit. Reuters was not immediately able to confirm the connection.
Smith, who was one of the National Football League's top defensive ends before his retirement in 2014, was traveling in a Mercedes in the city's Lower Garden District shortly before 11:30 p.m. CDT (0430 GMT) on Saturday when his car was rear-ended by a Hummer.
Smith, 34, exchanged words with the driver of the Hummer, who took out a handgun and shot him several times, New Orleans Police Department spokesman Juan Barnes said in a statement.
Photos of Will Smith throughout his NFL career:
Former New Orleans Saints player Will Smith throughout his career
Former Saints player Will Smith shot dead, suspect charged
NEW ORLEANS, LA - AUGUST 16: Will Smith #91 of the New Orleans Saints anticipates a play during a preseason game against the Oakland Raiders at the Mercedes-Benz Superdome on August 16, 2013 in New Orleans, Louisiana. The Saints won 28-20. (Photo by Stacy Revere/Getty Images)
HOUSTON, TX - AUGUST 25: Ben Tate #44 of the Houston Texans rushes past Will Smith #91 of the New Orleans Saints at Reliant Stadium on August 25, 2013 in Houston, Texas. (Photo by Bob Levey/Getty Images)
NEW ORLEANS, LA - AUGUST 16: Matt Flynn #15 of the Oakland Raiders is sacked by Will Smith #91 of the New Orleans Saints during a preseason game at the Mercedes-Benz Superdome on August 16, 2013 in New Orleans, Louisiana. (Photo by Stacy Revere/Getty Images)
METAIRIE, LA - MAY 23: Will Smith #91 of the New Orleans Saints participates in drills during organized team activities, OTA's, at the Saints training facility on May 23, 2013 in Metairie, Louisiana. (Photo by Stacy Revere/Getty Images)
NEW ORLEANS, LA - SEPTEMBER 09: Will Smith #91 of the New Orleans Saints walks off the field after a play against the Washington Redskins at Mercedes-Benz Superdome on September 9, 2012 in New Orleans, Louisiana. (Photo by Chris Graythen/Getty Images)
NEW ORLEANS, LA - AUGUST 17: Will Smith #91 of the New Orleans Saints during the game against the Jacksonville Jaguars at the Mercedes-Benz Superdome on August 17, 2012 in New Orleans, Louisiana. (Photo by Chris Graythen/Getty Images)
NEW ORLEANS, LA - AUGUST 25: Will Smith #91 of the New Orleans Saints at the Mercedes-Benz Superdome on August 25, 2012 in New Orleans, Louisiana. (Photo by Chris Graythen/Getty Images)
METAIRIE, LA - MAY 24: Will Smith #91 of the New Orleans Saints stretches during OTA's at the Saints Training Facility on May 24, 2012 in Metairie, Louisiana. (Photo by Sean Gardner/Getty Images)
NEW ORLEANS, LA - DECEMBER 26: Will Smith #91 of the New Orleans Saints walks to the sidelines during a game against the Atlanta Falcons at Mercedes-Benz Superdome on December 26, 2011 in New Orleans, Louisiana. The Saints defeated the Falcons 45-16. (Photo by Wesley Hitt/Getty Images)
NEW ORLEANS, LA - OCTOBER 23: Will Smith #91 of the New Orleans Saints stands on the sideline during a game against the Indianapolis Colts being held at Mercedes-Benz Superdome on October 23, 2011 in New Orleans, Louisiana. The Saints defeated the Colts 62-7. (Photo by Stacy Revere/Getty Images)
SEATTLE, WA - JANUARY 08: Will Smith #91 and Jonathan Vilma #51 of the New Orleans Saints take the field against the Seattle Seahawks during the 2011 NFC wild-card playoff game at Qwest Field on January 8, 2011 in Seattle, Washington. (Photo by Jonathan Ferrey/Getty Images)
METAIRE, LA - CIRCA 2011: In this handout image provided by the NFL, Will Smith of the New Orleans Saints poses for his NFL headshot circa 2011 in Metairie, Louisiana. (Photo by NFL via Getty Images)
New Orleans Saints linebacker Will Smith (91) signs autographs after an NFL football practice at the team's training facility in Metairie, La., Tuesday, June 4, 2013. (AP Photo/Bill Haber)
FILE - This Dec. 9, 2012 file photo shows New Orleans Saints defensive end Will Smith before an NFL football game against the New York Giants in East Rutherford, N.J. More than nine months after the NFL first disclosed its bounty investigation of the New Orleans Saints, four players will finally get a ruling, Tuesday, Dec. 11, 2012, on whether their initial suspensions are upheld, reduced or thrown out. (AP Photo/Bill Kostroun, File)
New Orleans Saints defensive end Will Smith stretches during practice at their NFL football training facility in Metairie, La., Wednesday, Sept. 21, 2011. Smith is returning after serving a two-game suspension. (AP Photo/Gerald Herbert)
New Orleans Saints defensive end Will Smith answers questions at a news conference in Davie, Fla., on Monday, Feb. 1, 2010. The Saints will play the Indianapolis Colts in the NFL Super Bowl XLIV Sunday. (AP Photo/Mark Humphrey)
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Smith was drafted by the Saints in 2004 after playing college football with Ohio State. The 6-foot 3-inch (191 cm) lineman played a decade with the Saints before he was injured in 2013 and his contract was terminated in 2014.
"This is such a tragic loss of life," National Football League Commissioner Roger Goodell said in a statement.
On the field, Smith was known as an hard-nosed enforcer who refused to bow to opponents. Off the field, Smith started the Where There's a Will There's a Way Foundation to provide opportunities for women and youth and was involved in other community initiatives, according to local media.
Saints fans and current and past players took to social media to mourn the death of the father of three children.
"Tragedy! Doesn't even describe the terrible news of the Nola legend Will Smith! Praying for the Smith family! Rest in Love Will!" tweeted Saints' offensive tackle Terron Armstead.
"In our community he was an important contributor to numerous charitable causes to benefit those in need," Saints General Manager Mickey Loomis said in a statement.
Smith's career was not without controversy. He was suspended in 2011 for two games for using a diuretic, which can mask steroids. He was also initially suspended for four games for his involvement in a New Orleans Saints' bounty scheme that paid players for hurting opponents. That suspension was later overturned on appeal to the NFL.
During Saturday night's incident, Smith's wife Racquel was shot in the leg and taken to the hospital, the police said.
The shooting came during a New Orleans food and music event, the French Quarter Festival, which Smith attended with his wife. Hours before he was killed, Smith posted a photo of himself and his wife on Instagram, saying "Having a blast at the #fqf2016."
The shooting occurred in a neighborhood along the Mississippi River, adjacent to the French Quarter, known for art galleries, restaurants, bars and historic buildings.
Police said the shooter stayed on the scene after the incident and that they recovered the weapon used.
Hayes, 28, has a previous criminal conviction, according to New Orleans Parish Criminal Court on-line records. He pleaded guilty in 2014 to illegal carrying of a weapon and possession of drug paraphernalia, both related to a 2010 arrest, and received fines and suspended jail sentences.