Authorities allege that Zapeta, who federal immigration officials say is a Guatemalan citizen who entered the U.S. illegally, calmly approached the woman aboard a stopped F train at the Coney Island-Stillwell Avenue station in Brooklyn on Sunday morning and set her clothing ablaze.

Neighbors described it as an illegal "shot house." During a news conference, Sheriff David Davis said an argument broke out at the house, where someone began to fire a gun, shooting seven people. Davis said the call came into the Macon-Bibb Emergency-911 Center at 1:12 a.