Hamilton police are investigating an overnight hit and run — but detectives say they're getting little help from the victim to figure out exactly what happened.

The incident took place just before 12:30 a.m., when a 28-year-old man was walking along Sanford Avenue North and was hit by a black sedan going the wrong way on the road, police say.

The vehicle took off before police got there. The victim sustained minor injuries and was taken to hospital.

"Detectives believe an altercation may have taken place prior to the collision involving the pedestrian and an unknown party," a police news release reads. "The pedestrian is currently uncooperative however detectives continue to investigate."

Police say this incident is the 140th collision involving a pedestrian and vehicle in Hamilton this year, compared to 278 such collisions last year.

There have been two pedestrian fatalities this year involving motor vehicles.