New Orleans authorities are responding to a "mass casualty incident" in which at least 12 people have died and 35 have been injured after a vehicle drove into a crowd in the city's bustling Bourbon Street area during the early hours of New Year's Day.

Ten people were killed and 30 injured after a vehicle drove into a crowd on New Orleans’ Canal and Bourbon Street on Wednesday in what the FBI is investigating as “an act of terrorism.” New Orleans Police Department Superintendent Anne Kirkpatrick said two police officers were shot in what Mayor LaToya Cantrell described earlier Wednesday as a “terrorist attack.