The FBI has named the driver of the vehicle that plowed through the crowd on Bourbon Street as 42-year-old Shamsud-Din Jabbar, a US citizen and Army veteran from Texas.
Gatekeepers News reports that he was killed during an exchange of gunfire with police.
Authorities have now said that 15 people were killed in the attack and at least 35 others were injured.
According to CBS news, Jabbar rented an Airbnb in New Orleans. A fire broke out on Wednesday but it is not clear if there was a link with the attack.
The FBI said an Islamic State flag was found in the vehicle used in the attack, as well as weapons and a potential improvised explosive device. They also said that potential improvised explosive devices were found in the French Quarter area of New Orleans where the attack took place
Details of the suspects motive have yet to be announced by investigators.
The FBI is working to determine whether the suspect had any potential affiliations with the group or other terrorist organisations.
