Vietnamese people found dead in lorry 'suffocated and overheated'

Police reveal cause of death following postmortems on 39 people as further arrests made

Thirty-nine Vietnamese people found dead inside a lorry in Essex are believed to have suffocated and overheated, police have revealed, as further arrests were made.

Postmortem examinations have been completed and the provisional cause of death has been given as a combination of hypoxia and hyperthermia in an enclosed space, Essex police said.