6 Oct 2019 01:22 AM EST

Four homeless men were killed -- and a fifth seriously injured -- around Manhattan's Chinatown neighborhood Saturday. CNN reports New York City Police said someone struck their heads with metal, apparently while they were sleeping. A suspect -- a 24-year-old man who investigators believe also is homeless -- is in custody. Officers found the victims early Saturday in three locations in or near Chinatown after someone called 911. Investigators found a metal object, possibly a pipe, that they believe was used in the attacks. Two witnesses saw a man in a black jacket and black pants strike someone numerous times with a metal object before fleeing. Officers took a man matching the attacker's description into custody.