Mystery surrounding the death of teenager Stuart Lister deepened today after police released video footage of him running across a road.

Stuart was caught on Keighley town centre CCTV cameras leaving Oscar's nightclub at 1am.

Within half an hour, the 18-year-old was found unconscious with serious head injuries less than half a mile away from his home in Steeton.

He died four days later in Leeds Infirmary where he had been on a life-support machine.

Police have revealed they are not treating his death as murder but say it was related to a serious road traffic incident.

They say they are keeping an open mind about what caused the teenager's injuries, but one possibility is that he fell off, or from, a vehicle.

They now hope the picture - the last known sighting of Stuart before he was found on the roadside at Steeton - will help jog the memories of people who may have seen him during the early hours of Saturday morning. It shows him leaving the nightclub before crossing Worth Way-East Parade and going towards Hanover Street.

Half an hour later, a passing taxi driver found him seriously injured by Aireburn Garage in Skipton Road, Steeton, about half a mile from his Thornhill Road home.

Today the taxi driver, Craig Brierley, who was driving a dark green Ford Mondeo, spoke about how he discovered Stuart.

Craig, 26, a part-time driver with North Street-based Keighley Taxis, said: "He was lying about two feet into the road, just past the Aireburn Garage. I rang Keighley police and told them I thought he was drunk and needed to be moved because he was in a dangerous position."

He said he then got out of his car and realised the situation was more serious when he saw blood coming out of Stuart's ear.

He called for an ambulance and stayed with Stuart until the police and an ambulance arrived a few minutes later.

"I checked his pulse and he was still breathing. But he was unconscious," added Craig. "Other than the bleeding from his ear, he did not appear to have any injuries."

A police spokesman said they were releasing the CCTV picture as part of a renewed appeal for information about exactly how, when and from where Stuart left the town to return home.

Inspector Mick Hopwood added: "Did he get a lift, did he get a taxi, or did he walk? We would like to hear from anyone who was with or who may have seen Stuart, particularly between the time he left Oscar's and being found in Steeton."

Anyone with any information about Stuart's movements after leaving the nightclub or the incident itself, should call Keighley police on 01535 617059.

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