Police investigating the death of Steeton teenager Stuart Lister today said they were treating it as "suspicious".

And early this morning officers were quizzing motorists and pedestrians in a bid to unravel the mystery.

Meanwhile police have set up an incident room.

They hope this morning's inquiries will help establish exactly what happened to Stuart, who was left for dead in Skipton Road, Steeton, by the Aireburn Garage at about 1.30am last Saturday.

Up to a dozen officers from Keighley and Leeds were involved in this morning's operation, carried out in Skipton Road between 12.30 and 2am, exactly a week after the incident which resulted in Stuart's death on Tuesday.

Detective Sergeant David Bartley said: "The aim of the information was to establish whether there are any witnesses.

"It involved stopping motorists and pedestrians in the area where Stuart was found and asking them whether they were there last week and if so whether they saw or heard anything."

Det Sgt Bartley said they still had an open mind about exactly how Stuart was injured but added: "It is being treated as a suspicious death.''

The last confirmed sighting of Stuart before he was found in Skipton Road puts him coming out of Oscars nightclub in Keighley at about 1am and crossing Worth Way-East Parade.

But police still want to establish exactly how, when and from where Stuart left the town to return home.

Stuart's father, Keith Lister, 45, said: "The police are doing what they can. As soon as someone leaves the scene it becomes a suspicious incident and it's absolutely vital that whoever else was involved should come forward and let us know what happened."

And the teenager's brother Jason, 24, said: "We're very happy with the way the police are handling it - they're doing everything they can.''

Anyone with any information about the incident should call Keighley police on 01535 617059.

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