A motorcyclist was airlifted to hospital after he was found injured in south Norfolk.
Police are appealing for witnesses following the incident in Aslacton, near Long Stratton, on Saturday, September 1.
At around 4pm on Plantation Road the rider was found laying near a black Suzuki GW 250cc which was on a grass verge.
The man had suffered serious injuries and was airlifted to Addenbrooke's Hospital in Cambridge for treatment.
A Plantation Road resident, who did not want to be named, said: 'We saw the helicopter come out and the police, and the road was blocked, but we didn't see anything.
'It happened just after Sneath Road. You could see the skid marks.
'The ambulance went off towards the Cambridge area. We started to think the worst because the road was closed for so long - I went out at 7.15pm and the road was still closed then.
'We have been wondering about what happened and asking people but no one seems to know.'
Anyone who may have witnessed the incident, or may have dash cam footage of the motorcycle around the time of the incident, should contact PC Phillip Higgins at Wymondham Roads Policing on 101.
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