A 29-year-old motorcyclist has died after colliding with the central reservation of the M1 motorway.
The crash happened at about 10.50pm last night on the northbound carriageway between junctions 16 and 17.
A spokesman for Northamptonshire Police said: “The collision involved a white Yamaha R6 being ridden by a 29-year-old woman, from Leicestershire, who died at the scene.
“Officers would like to speak to anyone who may have witnessed this collision, or who may have any information regarding it.”
Police also want to speak to anyone who saw another motorbike, a multi-coloured Yamaha R1, and a grey Nissan GT-R.
Both were also travelling north prior to the crash, but were not involved.
Witnesses, or anyone with information can call the Drivewatch Hotline 0800 174 615.