61-year-old man has been arrested on suspicion of phone hacking.

 The man is believed to be former News of the World newsdesk editor Greg Miskiw.

Scotland Yard said the man has remained in custody after visiting a London police station by appointment.

Channel 4 News filmed Mr Miskiw in Florida just over a fortnight ago saying he would voluntarily return to the UK from the US.

He had been mentioned in the notes of Glenn Mulcaire, the private investigator at the centre of the phone hacking scandal.

Mr Miskiw was an editorial executive at the newspaper until 2005, during the time when private investigators are alleged to have intercepted voicemail messages on behalf of the News of the World.

When Mr Miskiw was approached by reporters in Palm Beach, Florida, he told them he had plans to fly back to London to answer any questions police might wish to ask him.

"I'm returning to the UK voluntarily," he said.

"My solicitor has been talking to the police for some time now, so I have in effect been in touch with the police. They know where I am, and they know I'm returning - that's all I'm saying."