A minibus has crashed with two trucks on a British highway, killing eight people and injuring four others.
Six men and two women died at the scene, and a woman, a man and a five-year-old girl were taken to hospital with serious injuries. Four people have been taken to hospital.
The M1 southbound between junction 15 and junction 14 has since reopened.
Two men, the drivers of the two lorries, were arrested and remained in custody.
A 31-year-old man from Worcestershire has been arrested on one count of causing death by unsafe driving and one count of driving over the alcohol limit.
Two men, one aged 31 and the other aged 53, have been arrested on suspicion of causing death by unsafe driving.
Curfew relaxed in Punjab, Haryana towns
We condemn the attack and peace will prevail in Punjab as long as I am here. It was a mistake to allow people to converge on Panchkula.
"The southbound carriageway between J15 and J14 is now closed and is likely to remain closed for a significant amount of time".
Officers from the Joint Operations Unit for Roads Policing launched an investigation to establish the circumstances of the collision.
Chief Inspector Henry Parsons from Thames Valley police said: "Emergency services are on the scene responding to this collision and road closures are in place".
The vehicles involved in the crash were travelling in the same direction. Recovery and investigation work is ongoing.
He asked for witnesses, or anyone with information, to call the 24-hour Thames Valley Police inquiry centre on 101, quoting URN 203 of August 26.