New Orleans police are searching for Akein Scott, a 19-year-old with a rap sheet who is suspected of shooting 19 people at a Mother's Day parade. Three of his alleged victims remain in critical condition after the Sunday attack.

Scott was identified shortly after surveillance footage released to the public showed a black man with a white t-shirt casually chatting with another person, then walking toward the parade as other participants scattered. The man appeared to be holding a gun when he turned to run away.

The teenager was named by New Orleans Police Superintendent Ronal Serpas at a Monday evening press conference. Serpas said an arrest warrant was issued for Scott and that three locations were unsuccessfully searched for the suspect, WDSU-TV reports.

"What happened yesterday was an atrocity, and we want to make sure that everyone who took part in that violence faces consequences of the criminal justice system," Serpas said, according to The Times-Picayune.

"We will be looking for Akein Scott for the rest of the night and tomorrow until we find him and I would strongly recommend that Akein turn himself in quickly," Serpas said.

Addressing questions from reporters, Serpas added, "Aiken is no stranger to the criminal justice system. He has been arrested in the past for resisting arrest, for possession of a firearm, for narcotics charges and the like."

Information posted to the website of the Orleans Parish Criminal District Court shows that Scott was released from jail after posting a $15,000 surety bond on April 29. He is awaiting trial for illegally carrying a weapon with a controlled dangerous substance. He was arrested March 5, the court records show, and initially charged with possession of stolen firearms, possession of heroin and resisting police – but those charges were discontinued.

If convicted of the gun crime he's currently charged with, Scott faces a minimum sentence of five years in prison under the Louisiana statute he's accused of violating, which is posted on the website of the state legislature.

Immediately after the Mother's Day shooting, police indicated that as many as three gunmen may have perpetrated the Ward 6 attack. It's unclear if other suspects will be sought by police.

Three people injured in the attack remain in critical condition and need more surgeries to treat internal organ damage, WWL-TV reports. There's a $10,000 reward for turning Scott in to police.