New York City police have a person in custody who is suspected to have lit a woman on fire in the subway and then watched from a bench as she became engulfed in flames and died.

A suspect is in custody after the incident on an F train in Brooklyn on Sunday morning. Officers found a woman "fully engulfed in flames."

Calil, 33, of Guatemala was charged Monday afternoon with murder after authorities say he approached a woman on a train in Brooklyn and ignited her clothes.