Officers are appealing for witnesses to come forward following a serious collision involving a heavy goods vehicle and a bicycle in Ledsham, near Ellesmere Port.
A 39-year-old man from Wirral sustained serious injuries as a result of the collision.
The incident occurred on the A540 Parkgate Road, next to the junction with Badgers Rake Lane, at around 4.15am on Saturday 18 February.
The casualty was taken to the Countess of Chester Hospital in an ambulance. He remains in hospital receiving treatment.
The driver of the HGV, a 54-year-old man from Chester, was arrested at the scene on suspicion of causing serious injury by dangerous driving.
He has since been released under investigation pending further enquiries.
A range of enquiries in relation to the incident are ongoing.
As part of their enquiries, officers want to speak to anyone who was in the area and witnessed the collision or anything else that may aid 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 help the investigation is asked to call Cheshire Constabulary on 101, quoting IML 1482021, or give the details via https://www.cheshire.police.uk/tell-us 
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