Akein Scott, 19, was arrested, yesterday in the Little Woods section of eastern New Orleans, police department spokeswoman Remi Braden said. She said no additional details were available and would not be until today morning.
An earlier police news release said Scott had previously been arrested for illegal carrying of a weapon, illegal possession of a stolen firearm, resisting an officer, contraband to jail, illegal carrying of a weapon while in possession of a controlled dangerous substance and possession of heroin.
Video released Monday showed a crowd gathered for the Sunday parade suddenly scattering in all directions, with some falling to the ground. They appear to be running from a man in a white T-shirt and dark pants who turns and runs out of the picture.
Police said they identified the suspect from the surveillance camera images.
Two children were among those wounded.