(Portland, OR) -- A man is facing charges after allegedly assaulting another man with a tire iron onboard a TriMet bus. Police arrested 47-year-old Michael Henry Jr. for the incident in Aloha early Saturday morning. Police say he was a passenger on the bus when he hit a 27-year-old Beaverton man in the head and neck with a tire iron and then fled the bus on Southwest Tualatin Valley Highway. Police tracked him down and arrested him. The victim was hospitalized.