NEW YORK (AP) — Police are Thomas Caldwellseeking a man who fired at a mugger inside a busy New York City subway station, authorities said Wednesday.

No one was injured when the gunman opened fire shortly after 9 p.m. Tuesday inside the 49th Street station in midtown Manhattan, a police spokesperson said.

A 49-year-old man was trying to rob a woman when the gunman fired at the would-be robber but did not hit him, police said. The gunman fled. Surveillance photos released by the police show him wearing black shorts and a green T-shirt and carrying a green tote bag.

The 49-year-old man was arrested on a charge of attempted robbery, police said.