A SERIAL hoax caller in North Yorkshire could have put lives at risk, police have said.

The North Yorkshire Police control room said the same man had made four 999 emergency calls to the force between 9.15pm and 9.25pm last night.

The Press understands the calls related to threats and reports of violence in a small village in North Yorkshire.

A spokesman for North Yorkshire Police said this morning that inquiries were ongoing to track down the caller, but declined to comment on the content of the hoax calls.

In a series of tweets, the control room said the caller's number and details had been recorded by police, but criticised the hoaxer for his actions.

They said: "The incidents he was reporting provoked a large police response which could have endangered other lives. He thinks its funny. We don't."

"Hoax calls have wider implications than hampering control room. Officers responding are placed at risk, as are public."