Investigators said they recovered an ISIS flag from the pickup truck, and FBI bomb technicians also found two improvised explosive devices (IEDs) in coolers: one that was found at the intersection of Bourbon and Orleans streets and one at another intersection about two blocks away.

Recordings and interviews detail Shamsud-Din Jabbar’s growing discontent with American society and increasing isolation even within his local Muslim community.

The FBI said the suspect responsible for the New Orleans attack traveled from Houston on New Year's Eve before carrying out the attack.

It is the deadliest attack by ISIS on the West in several years. But still, almost a week later, the group also known as Islamic State has yet to issue its trademark claim of responsibility for the horrific New Year’s violence in New Orleans.

Family members and friends have begun identifying the 14 people who died in the truck-ramming attack early Wednesday morning on Bourbon Street in New Orleans.

The 42-year-old U.S. Army veteran responsible was a Houston resident, who, prior to striking, pledged his allegiance to ISIS.