A 53-year-old Lawrence man was flown by helicopter ambulance to Kansas University Hospital with life-threatening injuries late Monday after his motorcycle collided with a vehicle on Kansas Highway 10 near the East Hills Business Park, police said.

The motorcyclist was traveling west on K-10 when he struck the side of a sedan entering the roadway, said Sgt. Mark Warren, a police spokesman. Warren said police were still gathering information about where the sedan was entering the road. The driver of the sedan was not injured, Warren said.

The collision occurred about 10:15 p.m.