Opera singer Katherine Jenkins has threatened to call in police after taking a photo of a "creepy" man who snapped her in a hotel.

The Welsh mezzo-soprano spotted the man taking pictures of her so she took out her phone and snapped an image of him, and she has vowed to give the photo to cops if he publishes his shots.

In a post on Twitter.com on Friday (13Sep13), Jenkins writes, "Dear creepy guy who sneaked into my hotel to take pics of me - u'r (you are) a disgrace. You broke the law by trespassing so if you do anything with those pics, the police will get the photo I took of you. Two can play that game."

Jenkins was photographed on a night out in London on Wednesday (11Sep13) but the location of the hotel where the incident happened is not known.