M5 Crash: Smoke is 'major line of inquiry'

Police investigating the M5 crash which killed seven people have said a bonfire and firework display next to the road is the "major line of inquiry".

Assistant Chief Constable Anthony Bangham, of Avon and Somerset Police, said he was focusing on the event held on Friday night.

He said "a bank of smoke" was across the M5 at the time of the crash.

Jon Kay reports.