Richard White was declared dead at 4:02 PM yesterday, a spokesman for the Jefferson Parish Sheriff's Office said.
Investigators had hoped to question White to find out what set off his rampage, but he appeared to have died before law enforcement officials were able to speak to him.
Earlier yesterday, officials released new details about the attack, including the fact that they believed White was mentally ill. He had brought six Molotov cocktails, a barbecue lighter and smoke bombs into the airport, they said.
A law enforcement officer shot White after he approached the security checkpoint just before 8 PM local time, officials added. One of those bullets also struck the female TSA officer in the arm.
The officials told reporters that he had earlier left a bag of explosives inside the airport concourse.
The motive for the attack was unclear, Sheriff Normand said. He added that White's wife and children had been "very cooperative" and had told the authorities that there was a "mental illness component" to his behaviour.
White was taken to a local hospital, where he underwent surgery. He is a taxi driver who recently received his chauffeur's license.
However, the sheriff said officials had not learned of any past episodes that might have hinted at an outburst of violence like the one Friday.
