India, May 26 -- Joseph Neumayer, 28, was taken into custody on Sunday for allegedly threatening to kill President Donald Trump and intending to firebomb the US Embassy branch in Tel Aviv, according to federal prosecutors.

FBI officers arrested Neumayerat New York City's John F. Kennedy Airport after he was extradited from Israel.

Neumayer, who visited Israel in April, is accused of approaching the US Embassy in Tel Aviv on May 19 with a backpack, unprovokedly spatting on an embassy guard, and running away when the guard attempted to arrest him. He forgot his backpack during the confrontation. Investigators discovered three Molotov bombs inside the backpack.

"A search of Neumayer's backpack revealed three rudimentary improvised incendi...