Police say a 20-year-old man was killed late Wednesday night in a rollover crash on Route 16 in Lagrange.

The Penobscot County Sheriff’s Office was called to the single-vehicle accident on the Bennoch Road shortly after 11 p.m. First responders discovered that the operator of the vehicle was deceased.

According to Sheriff Troy Morton, the victim was identified as 20-year-old Zackary Coffey of Milo. No one else was in the vehicle.

The investigation thus far has determined that the vehicle was traveling north on Route 16 and left the roadway and rolled over, Morton said. The investigation is continuing.

The Penobscot County Sheriff’s Office was assisted by the Maine State Police, as well as the Lagrange and Bradford Fire Departments.