Army record, DUI, social media posts: What we know about suspect in New Orleans attack

The man who the FBI says drove a truck into a crowd of revelers celebrating New Year's in the French Quarter of New Orleans on Wednesday served in the U.S. Army for over a decade before he obtained a lucrative job at a global accounting firm and encountered financial trouble.

Authorities say Shamsud-Din Jabbar, 42, rented a truck and rammed it into a throng of people in the bustling tourist district, killing at least 14 and injuring dozens of others in what is being investigated as an "act of terrorism." An Islamic State flag was recovered from the truck, which also carried weapons and what appeared to be explosive devices.

The FBI said Jabbar, who was shot dead by police after he opened fire on law enforcement, posted videos on social media shortly before the attack saying he was inspired by ISIS and decided to carry out the attack after initially planning to harm his family and friends.