The U.S. airman who set himself on fire outside the Israeli embassy in Washington on Sunday to protest against the war in Gaza has died, the Pentagon said Monday. 

An Air Force spokeswoman said the unnamed man had "succumbed to his injuries and passed away last night. We will provide additional details 24 hours after next of kin notifications are complete."

"I will no longer be complicit in genocide," said the man, wearing military fatigues, in a video he broadcast live over the internet, according to the New York Times. He then doused himself in a clear liquid and set himself on fire, screaming "Free Palestine," the Times reported.

Local police and Secret Service said they are investigating the incident.

(With input from agencies)