New York City police arrested and charged a man suspected to have set a woman on fire in the subway early Sunday and then watched from a bench as she became engulfed in flames and died.

The alleged Brooklyn subway arsonist who burned a woman alive on a train car Sunday was arraigned Tuesday on first-degree murder charges at a hearing when even more disturbing details of the homicide were revealed.

Federal immigration officials say Zapeta, 33, is a Guatemalan citizen who entered the U.S. illegally.

Sebastian Zapeta-Calil made a bizarre admission to officers after allegedly setting a woman on fire who died on the spot.