BARRIE, ONT. -- Barrie police are investigating after a man suffered life-threatening injuries in a collision involving a motorcycle.

According to police, officers responded to calls of a single-vehicle collision around 1:45 a.m. Sunday on Blake Street. Police say the 38-year-old male was driving a motorcycle and struck a tree.

He was transported to a Toronto-area trauma centre with life-threatening injuries.

Blake Street was closed between Vancouver Street and Nelson Street following the collision.

The traffic unit is now investigating the incident.