Protester attacks Rupert Murdoch at hearing

London (CNN) - A man tossed light-blue shaving cream at media magnate Rupert Murdoch during a parliamentary hearing Tuesday.

"You naughty billionaire," the man said, according to the British Press Association, as he hit Murdoch with the foam.

Murdoch appeared stunned but unharmed.

Murdoch's wife, Wendi Deng, who was seated behind him, leaped to her feet and smashed the attacker's hand with her own, pictures from the scene showed.

A police officer arrested the protester, identified by the British Press Association as a man known by the name "Jonnie Marbles" on the social networking service Twitter. CNN wasn't able to independently verify the man's identity.

Police said only that the man was 26 years old, according to the press association.