BOSTON (AP) — Massachusetts State Police say a speeding car struck a cruiser on the side of a Boston highway, pushing the cruiser into another vehicle and sending six people to a hospital.

Spokesman David Procopio says the crash occurred at around 2:45 a.m. Saturday after a trooper had responded to a previous crash. Procopio says the trooper was in his cruiser with his lights activated when a Honda Accord carrying four people struck his vehicle.

He says the impact pushed the cruiser into another vehicle, and the cruiser ended up on the other side of the road facing the opposite direction.

Procopio says several people were unconscious after the crash, including the trooper. He has a concussion and other injuries.

Five others were also hospitalized. The injuries are believed to be serious.