New York City police said a man named Frank James was a person of interest in the shooting aboard a subway train in Brooklyn on Tuesday morning. James rented a U-Haul truck, the keys of which were found at the scene of the shooting, police said.

The shooter fired 33 shots, wounding 10 people and injuring 13 others who fled the gunfire, officials said. Police said they do not know whether James was the gunman.