St. Thomas police are seeking 34-year-old Justin Lapain.
Police said that officers responded to a downtown homeless shelter early Saturday morning for reports of an assault.
Through investigation, police determined that a 42-year-old man had been assaulted with a bat. The man sustained minor injuries which were treated by paramedics on scene.
Lapain has been charged with one count of assault with a weapon and one count of failing to comply.