Eight people have died after a crash involving two lorries and a minibus in Britain.
It happened on the M1 near Milton Keynes just before 3.15am.
Two men have been arrested on suspicion of causing death by dangerous driving.
The vehicles collided while travelling on the southbound carriageway.
Four people have been taken to hospital with injuries.
Ollie Miller, who drove past the scene on Saturday morning, said: "It looked horrible, the two lorries were smashed badly and I could see a car or minibus underneath one of the lorries. It was totally destroyed, the car/minibus was basically flat."
It is believed the minibus had travelled from the Nottingham area.
Chief Inspector Henry Parsons said: "Emergency services are currently on the scene responding to this collision and road closures are in place.
"We would ask all motorists to please avoid the area, use alternative routes and await further updates before attempting to travel on this route. We appreciate motorists' patience while we deal with this serious incident."
They are appealing to anyone who witnessed the collision to contact them.