A woman and three children have been killed in a crash on the A34 in Berkshire.
The collision involved four lorries and four cars.
The woman has been named as 45-year-old Tracy Houghton from Dunstable, Tracy Houghton, 45, was killed alongside her sons Ethan, 13, and Josh, 11 and an 11-year-old girl who has yet to be officially named.
A 30-year-old man from Andover was arrested on suspicion of causing death by dangerous driving, he has been released on bail until 5th October 2016.
A man with serious injuries has been flown by air ambulance to the John Radcliffe Hospital in Oxford.
Thames Valley Police have confirmed a further 11 people sustained minor injuries.