Police said a man died after a crash involving a pedestrian and a lorry on the motorway near Exeter in the early hours of Tuesday morning (February 1).
The M5 northbound carriageway of the motorway has been closed for several hours and traffic diverted through Exeter following the collision shortly after 4am on the carriageway between Exeter and Cullompton.
Police said it was likely the road would remain closed for several more hours while investigations were caried out at the scene.
Devon and Cornwall Police were called to the northbound carriageway of the M5 between Exeter and Cullompton at 4.05am.
The emergency services were called to the scene, a man was pronounced dead and his next of kin were informed.
The northbound carriageway has been closed, as well as the on-slip from the A30 Honiton to Exeter road, at junction 29.
A Devon and Cornwall Police spokesman said: “Police were called to reports of a road traffic collision involving a heavy goods vehicle and a male pedestrian on the northbound carriageway of the M5 between Exeter and Cullompton at 4.05am today.
“Emergency services attended and the pedestrian was pronounced deceased at the scene.
“His next of kin have been informed.
“The northbound carriageway has been closed, as well as the on-slip from the A30 at junction 29.
“It is expected that the road will remain closed for some time.”
Long delays are expected while the motorway is closed and police investigation work takes place.
Queuing traffic is expected from M5 junction 29, the A3015 Honiton Road, near Exeter, to junction 28, A373 Station Road, Cullompton services area.
Traffic congestion has been reported at the A38 Kennford turn-off, and on the opposite carriageway, near junction 28 of the M5.
And there are long delays on roads through Exeter as traffic diverts.