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.

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

Shamsud-Din Jabbar appears to have been inspired by the Islamic State, Biden says. The U.S.-designated terrorist group once controlled swaths of Syria and Iraq.

TCU wide receiver Jack Bech said his brother, Martin "Tiger" Bech, one of the 14 victims of the New Orleans truck attack, was showing a friend around the city when the attack occurred. Meanwhile, investigators found materials linking the attack to ISIS-inspired violence in the attacker's Houston home and nearby apartment.

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.