Officers are appealing for witnesses and dashcam footage following a fatal collision on the M6.
At around 5.15pm on Friday 2 December officers were called to the M6 between junction 16 to junction 17 northbound at Sandbach following reports of a collision involving a HGV, a Volkswagen Polo, a Peugeot 107 and a BMW.
A passenger in the Polo, a 19-year-old woman from Dudley, was taken to hospital with serious and life-threatening injuries but, despite best efforts of all involved, has since passed away.
The driver and another passenger in the Polo, two men in their 20s, remain in hospital with serious injuries.
The driver of the HGV, a 27-year-old man from Rossendale, was arrested on suspicion of causing death by dangerous driving.
He remains in custody assisting police with their enquiries.
Officers are now appealing for anyone with information or dashcam footage from around the time of the collision to come forward.
Anyone who may have witnessed the collision is urged to contact Cheshire Police via the Cheshire Police website quoting IML 1426483 or call 101.