A pedestrian has died after being hit by a car on a motorway and thrown into oncoming traffic, police said.
Officers were called to a stretch of the M66 near Bury, Greater Manchester, at 8.15pm on Friday following reports a vehicle had collided with a man on the northbound carriageway.
The impact of the collision threw the victim onto the southbound carriageway where he was hit by further vehicles, Greater Manchester Police (GMP) said.
The victim, who has not been named, was pronounced dead at the scene.
The southbound carriageway was closed for a number of hours.
Constable Nicholas Corlett, of GMP's serious collision investigation unit, said: "This is a devastating incident for all involved and our thoughts are with them as our investigation continues.
"Our enquiries are in their early stages but we believe several people witnessed this collision and might have dash cam footage or information that could assist us.
"If this is you or you were on either side of the carriageway at around 8.15pm, please contact us as soon as possible."