New York City police say they have taken into custody a person of interest in the death of a woman who may have fallen asleep on a stationary subway train before being lit on fire by a man she didn’t know.

A man accused of setting a woman on fire inside a New York City subway train and then watching her die is awaiting arraignment.

A 33-year-old Guatemalan citizen was charged with murder and arson on Monday after allegedly lighting a woman on fire and watching her burn to death on a New York City subway train over the weekend, police and federal officials said.