The Scarlett Johansson naked pictures scandal has sparked an FBI probe into the alleged hacking of celebrities’ computers.

The naked photos of Johansson, apparently taken by the actress herself, were published on gossip websites, while there were reports also of a hacked picture of Justin Timberlake, taken by actress Mila Kunis.

Naked pictures of Scarlett Johansson leaked online after phone hack

“The FBI is investigating the person or groups responsible for a series of computer intrusions involving high-profile figures,” said Laura Eimiller of the Federal Bureau of Investigation (FBI) office in Los Angeles.

The officer refused to name the Hollywood celebrities who had reportedly been targeted “due to the pending nature of our investigation,” but it was thought there had been a recent surge in the alleged hacking of stars, initially reported earlier in the year.

The pictures of Johansson, star of The Horse Whisperer, Lost In Translation and Girl with a Pearl Earring, showed her in a state of undress in a home setting.

In one she was holding a towel round herself with face to the camera, her unclothed rear view clearly visible in a mirror, while in the other she was topless. In the first picture she was photographing herself with a smartphone camera, and appeared to be doing

so in the second, on a bed.

A publicist for Johansson did not immediately respond to a request for comment.

Celebrity gossip website, TMZ meanwhile reported that actress Mila Kunis had been hacked, and that pictures of Timberlake – with whom she starred in Friends with Benefits – had been leaked.

Two of the pictures show Timberlake, one shirtless in bed, another with a pair of pink panties on his head; another shows Kunis in a bathtub, and a fourth is explicit in nature, of an unidentified male, TMZ reported.

The FBI spokeswoman declined to say how exactly the celebrity victims may have been hacked.

“What traditionally was called computer intrusion can nowadays mean anything from.compromise of a desktop, a laptop, an iPad, a phone or really any device with which one can access personal information via the Internet.”