A man has died after being hit by a car as he walked on a motorway.
Police say the man, who has not yet been identified, was in collision with a Skoda Octavia car on the M61 near Bolton at around 11.20pm last night.
Officers believe that hours before, the deceased may have been to a Tinie Tempah concert at the O2 Apollo in Manchester.
The car involved was travelling southbound on the M61 when it was in collision with the pedestrian in the carriageway between Rivington North Services and Junction 6.
The dead man is described as around 5ft 5in, with light brown hair and aged in his mid-20s.
Sergeant Lee Westhead, from the serious collision investigation unit of Greater Manchester Police, said: "We are working to establish the full circumstances leading to this young man's death.
"At this stage it is not clear how or why he came to be walking on the motorway.
"Our efforts to identify the man have proved to be unsuccessful, however we believe he may have been to a Tinie Tempah concert at the O2 Apollo in Manchester earlier in the evening.
"We are now appealing for the public to come forward with information to help with our inquiries.
"If you are worried about a friend or relative who has not returned home and who fits the description please get in touch as soon as possible. Similarly, if you saw a man walking on the motorway or have any information as to why he would be there, please get in touch."
The motorway was closed for a number of hours and has now fully reopened.
Anyone with information should call police on 0161 856 4741.