New York City police announced Sunday they have in custody a “person of interest” in the early morning death of a woman who they believe may have fallen asleep on a stationary subway train before being intentionally lit on fire by a man she didn't know.

Police arrested a man they said set a woman on fire while she appeared to be asleep on a New York City subway train on Sunday morning, killing her.

A suspect is in custody after a woman wasset on fire and died on the New York subway:: Jessica Tisch, Police Commissioner, New York City "Initially, we intended to use this press conference to ask for the public's help in identifying and locating someone who we believe carried out one of the most depraved crimes one person could possibly commit against another human being.