POLICE today urged residents in a York village to be on their guard against a door-to-door scam.

Three elderly residents in Strensall have reported a bogus workman calling at their homes and claiming that roof work needed doing on their properties.

Police said the man appeared to be targeting vulnerable old people who live alone in council homes or social housing - and said the fraudster has already claimed one victim.

The woman - in her 70s, like the two other complainants - handed over £40 cash to the conman.

But no work was carried out on her roof and the woman was left counting the cost, triggering today's warning from a leading policeman.

Acting Inspector Dave Kirby told the Evening Press that it was not his intention to scare residents.

But he called for them to be aware that a scam was operating in the area. He warned that they should never give money to people who turn up on their doorstep without a prior appointment to carry out work.

If in doubt residents should ask for identification, phone the company the workman claims to be from, or phone the council or police.

Acting Insp Kirby said the man operating in the Strensall area was reported to be carrying a clipboard and claimed to be a City of York Council worker when he called at the three homes.

Police were then alerted to the scam, which took place last Thursday during the day.

Acting Insp Kirby said: "Inquiries have taken place with various councils, and they know nothing about the workman. Our advice is do not hand over any money unless you are certain of who they are, and you are aware that the work needs to be carried out."

He said: "I don't want anyone else to fall victim to this man."

The suspect is described as white, in his 30s, scruffy, of average height and build and with sandy hair.

He is thought to have been driving a blue car.

Anyone who has been approached by the man or has information that can help the police, should phone North Yorkshire Police on 0845 6060247.

Updated: 10:31 Tuesday, May 24, 2005