Officers are appealing for witnesses to come forward following a serious collision involving a car and a motorbike near Chester.
The incident occurred on the A41 Whitchurch Road in Waverton, at the junction with Eggbridge Lane, at around 6.15pm on Thursday 15 April.
A man in his 70s sustained serious injuries as a result of the collision.
He had been riding a yellow Yamaha motorbike that collided with a black Vauxhall Corsa car.
The casualty was taken to Aintree University Hospital in an ambulance.
He remains in hospital receiving treatment.
The driver of the car is not believed to have been injured. Officers spoke to him at the scene.
Enquiries in relation to the incident are ongoing and no arrests have been made.
Officers want to speak to anyone who was in the area and witnessed the collision or anything else that may help their investigation.
They also want to hear from any motorists who believe they may have captured relevant footage on their dashcams.
Anyone with information or dashcam footage that may aid the investigation is asked to call Cheshire Constabulary on 101, quoting IML 964568, or give the details via https://www.cheshire.police.uk/ro/report.