An 88-year-old woman was the victim of a distraction burglar.
A man knocked on her door in Wood Farm Road, Oxford, at around 3.20pm on Friday claiming he needed to check the water supply because of a leak.
The pensioner let him inside and he asked her to go and fill the kettle up with water.
As he followed her in to the kitchen a second man entered the house and stole a large amount of cash from one of the bedrooms.
The first man is white, medium build and aged in his mid 20s to early 30s.
He was wearing a blue striped T-Shirt, dark trousers and spoke with an English accent, police said.
Police only released details today.
Dc Matt Welsh, of Oxford Burglary Team, said: "This was a heartless crime. Offenders are targeting the most vulnerable and helpless members of the community. I would like to hear from anyone that may have witnessed this incident or who saw anyone acting suspiciously in the area.
"I would urge anyone with elderly or vulnerable relatives, neighbours or carers to check their home security and alert them to the dangers of opening the door to a stranger.
"There is no reason why a stranger should ever come into your home. All agencies or utility companies should make an appointment and also use a password system."
Anyone with information should contact police on 08458 505505 or speak anonymously to Crimestoppers on 0800 555111.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article