What we know about the New Year's Day attack in New Orleans

NEW ORLEANS (AP) — Investigators now believe the driver who barreled through a crowd of New Year’s Day revelers in New Orleans acted alone and found he posted several videos on social media pledging his support for the Islamic State group, the FBI said Thursday.

The FBI called Wednesday's attack, which left 14 victims dead, an act of terrorism. The driver, Shamsud-Din Jabbar, a U.S. citizen from Texas, also died in a shootout with police.

Investigators found guns and what appeared...