Police have warned people to be vigilant after a bogus window cleaner was reported in Lupset.
Wakefield Central Neighbourhood Policing team said two people had already been targeted, and money and property had been stolen.
West Yorkshire Police officer given tetanus shot after being BITTEN while on duty
A spokesman said: “Please be aware of strangers at your door and if you have suffered a theft by a stranger in your home please let police know.”
Anyone with information about these incidents can contact West Yorkshire Police on 101.