Elderly people are warned to be vigilant after two crooks posed as water firm workers in an bid to burgle a vulnerable 91-year-old woman in her own home.
Police are now appealing for witnesses to trace the thieves, who used distraction burglary tactics in their attempt to steal valuables from the elderly woman.
The victim was at home in Hawthorne Avenue, Tibshelf, when she was visited by the offenders at about 8.30pm on Saturday, April 18.
One of the men said he was from a water company and needed to check water pressure in the address due to an explosion in the area.
The victim let the man in and, shortly afterwards, noticed the second man in the property as well.
The brave victim then challenged the men after becoming concerned by their behaviour.
The two crooks left the property.
It is not thought that anything was stolen.
The first man is described as white, between 20 and 30-years-old, about 5ft 5ins tall, with a round face and of average build.
The second man is described as being slightly taller and older, but no further description was available from the victim.
Police investigating the offence now want to hear from anyone who may have seen the two men in the area or received similar calls.
Witnesses or anyone with information should call Derbyshire police on 101, quoting crime reference 16190/15.
People can also call Crimestoppers, anonymously, on 0800 555 111.