A man has been taken to hospital with serious injuries after a road accident in Hartlepool.
It is believed a motorcyclist has collided with a tree.
A North East Ambulance Service spokeswoman said: "We were called at 16.33 to a report of a road traffic collision in Seaton Lane.
"We sent a rapid response ambulance and the air ambulance. We are transporting a patient by road, with support from the air ambulance crew, to James Cook Hospital with serious injuries."
A spokesman for the Great North Air Ambulance Service said: "We have accompanied a male patient to hospital."