ISIS flag seen in truck that kills 15 in US

Homemade pipe bombs found near site as FBI probes links to terror groups

Fifteen people were killed when a man drove a pickup truck displaying an Islamic State flag into a crowd of New Year's revelers early on Wednesday on Bourbon Street in New Orleans' famed French Quarter.

Thirty-three people were also injured when Shamsud-Din Jabbar, 42, a US Army veteran whose last-known residence was in Houston, Texas, drove into the crowd before he was shot and killed by police around 3:15 am on Wednesday.

"An ISIS flag was located in the vehicle and the FBI is working to determine the subject's potential associations and affiliations with terrorist organizations," FBI headquarters said in a statement.