Two men tried to gain entry to a Poole property by pretending to be police officers and pretending a mobile phone was a warrant card.
Dorset Police have released an e-fit image of one of the offenders after the attempted burglary along Lake Drive, Hamworthy between 7:30pm and 8pm on Monday January 28.
One of the offenders held up a mobile phone as if to show his warrant card - before saying he believed the resident was cultivating cannabis and needed to enter the property to carry out a search.
Police Constable Phil Cowlishaw of Hamworthy Safer Neighbourhood Team said: "Fortunately, the occupant, a man in his fifties, did not fall for this deception but the offender still managed to gain entry to the property briefly without invitation.
"When he was told to get out, both offenders left the scene.
"I am now in a position to release an e-fit of one of the offenders. I would urge the man pictured - and anyone who recognises him - to contact Dorset Police."
Police are reminding residents that genuine officers are always happy to clearly show their warrant card which contains a photograph and the signature of the Chief Constable.
Witnesses or anyone with information should contact Dorset Police on 101, quoting incident number 28:470.