Police are appealing for witnesses and dash-cam footage following a serious four-vehicle collision on the M1 near Northampton.

The crash happened at about 10pm on Tuesday, August 4, on the northbound carriageway between Junctions 16 and 17.

A spokesperson for Northamptonshire Police said officers from the Serious Collision Investigation Unit are investigating the circumstances of the collision and are keen to hear from anyone who was travelling on that section of the motorway at the time.

Investigators are particularly appealing for dash-cam footage recorded on the M1 between Junctions 16 and 17, in either direction, between 9.45pm and 10.05pm on Tuesday evening.

The M1 is closed northbound between J16 (Northampton) and J18 (Crick) due to a serious collision involving two lorries, one of which has overturned (National Highways)

placeholder image — The M1 is closed northbound between J16 (Northampton) and J18 (Crick) due to a serious collision involving two lorries, one of which has overturned (National Highways)

The spokesperson said any footage, no matter how insignificant it may appear, could prove vital to the investigation.

The northbound carriageway between Junctions 16 and 18 remained closed on Wednesday morning while emergency services dealt with the incident, and motorists were advised to avoid the area.

Anyone who witnessed the collision or has relevant information or dash-cam footage is asked to email [email protected], call the Drivewatch Hotline on 0800 174615, or contact Northamptonshire Police on 101, quoting incident number 26000465061.