A stretch of the M1 has been closed following the discovery of a body in the middle of the road at 3am.
The northbound carriageway , between junction 16 near Northampton and junction 18 near Rugby, is expected to remain closed for most of the day.
Police are appealing for information.
— Highways England (@HighwaysEngland) January 10, 2017
A diversion route is taking traffic from junction 16 via the A45, A5 and A428 back to the motorway at junction 18.
Northamptonshire Police said: “Motorists are advised to seek alternative routes and diversions will be in place.”
Witnesses or anyone with information can call police on 101 or Crimestoppers anonymously on 0800 555 111.