Eleven people were shot in New Orleans’ French Quarter early Sunday morning leaving two in critical condition, according to local media, citing police.
Initially, they had said there were 10 victims but later added one more to the count.
A person of interest was detained, they added.
The motive for the shooting was still unclear, as well as whether there was one or multiple gunmen.
Shots rang out just before 3:30 am local time (0830 GMT) on a busy section of Canal Street populated by shops and hotels, according to reports.
Police said they arrived swiftly on the scene with security having been beefed up for the weekend’s Bayou Classic, the annual college football game.
All eleven people injured in the shooting were transferred to local hospitals, reports said.