A bogus worker tried to con a pensioner into having unnecessary work done on his home.
The man called at the home of an 89-year-old man in Dewsbury Moor at around 11am on Friday.
He said drains at the property had overflowed and asked for money to carry out the repairs.
The pensioner said he was going to call the police and the man then left the property.
Det Con Jim Calpin, of Kirklees District CID, said: “The victim did the right thing in this situation by advising that he was going to phone the police. A legitimate caller would not leave at the threat of police attendance and would be happy to wait and verify their identity.
“As part of our enquiries in to this incident we are keen to hear from anyone else who has received a similar caller at their door or anyone who believes they have seen the man described in the Dewsbury Moor area around the time of this offence.”
The bogus worker is described as white, aged in his 30s, approximately 5ft 10ins tall, of slim build. He spoke with a local accent and was wearing a blue boiler suit with some sort of writing on it.
Anyone with any information should contact Kirklees District CID on 101 or Crimestoppers, anonymously, on 0800 555111.