A SPOOF menacing phone message is causing problems for the police.
Men are phoning them up saying they have had an anonymous call threatening to blow their kneecaps off or kill them.
It turns out it is a recorded message from a man who claims he has found the victim's mobile phone number on his girlfriend's phone.
He then makes the threats before phoning off abruptly.
Pc Michelle Jaques, of Huddersfield police, said: "Some people have fallen for this and it has caused them distress.
"Apparently it is a spoof phone message which friends of the `victim' ring up to organise.
"It sounds very genuine, but it is a prank."