At least 10 people were killed and more than 30 others were injured in New Orleans early Wednesday after a man rammed his pickup truck into a crowd during New Year’s celebrations and then shot at police officers when he crashed, officials said.

Authorities said the suspect, who is now dead, intentionally plowed his vehicle into a large group of revelers on Bourbon Street about 3:15 a.m. in what the FBI is investigating as an act of terrorism.

“This man was trying to run over as many people as…