London, Jan 25 : After UFOs, Robbie Williams' curiosity has turned to demons.

The 34-year-old singer's interest turned to his bedroom after he woke up with weird scratches on his body, many of which are in places he cannot reach.

And now, he and his pals are blaming them on a succubus - a female demon thought to have sex with men as they sleep.

The singer gave details of the wounds in a message posted on a website specialising in conspiracy theories and UFOs - Above Top Secret.

"I get them all the time but I haven't had them for a few months though," The Daily Star quoted him as saying.

He added: "I thought everybody got them until I brought it up with a few friends. But they knew nothing about such strange goings-on.

"They're about four to eight inches long and they look like they've bled a little and dried up. They don't last long, normally gone in a couple of days."

A fellow poster - "leapoffaith" - replied: "I believe the scratch marks are caused by succubi or incubi. It's very interesting.

"A camcorder beside the bed seems a good idea if this is something which happens to you frequently." (ANI)