An assault in Chatham is under investigation.
Police in Chatham-Kent say officers were called to Richmond Street just before 6 a.m. on Thursday morning for a reported assault.
According to police, a man was walking on Richmond Street between Raleigh Street and West Street and was approached by another man who asked for a light.
Police say the man struck the victim with a blunt object.
He was wearing a black hoodie/jacket and beige pants.
Police say they've received information a man driving a black pick-up truck was driving in the area and stopped to talk to the victim.
Chatham Police are asking this potential witness to come forward.