Two people have been killed in a motorway collision on the M1, police have said.
The accident occurred shortly after 5am on the southband carriageway in Buckinghamshire between junctions 14 and 13.
A white Ford Transit van was involved in a collision with a white Iveco lorry.
Thames Valley Police said two unnamed occupants of the van died at the scene.
The main southbound carriageway is closed as officers investigate the cause of the collision.
"The hard shoulder is being used to try to ease congestion but there are lengthy tailbacks and motorists are advised to avoid the area," a spokesman said.