- Mila Kunis' 'phone hacked, seductive pictures of Justin Timberlake leak'
Scandal: Scarlett Johansson, seen here in 2006, has allegedly called in the FBI after nude photos of her leaked online after they were stolen from a hacker
The photos, which the 26-year-old actress appears to have taken of herself, were leaked on a website yesterday.
If the pictures prove to be authentic, the Lost In Translation star may be the latest victim of a phone-hacking ring thought to be responsible for stealing naked photos and videos from at least 50 female celebrities.
The other targets reportedly included actresses Jessica Alba, Vanessa Hudgens, Selena Gomez and Miley Cyrus, as well as singer Christina Aguilera.
Gossip sites in America were asking yesterday if the photos of Miss Johansson were meant for actor ex-husband, Ryan Reynolds, or any of the men she has dated since the break-up, who include fellow Hollywood star Sean Penn.
Bloggers have linked the leaks to a hacking group called Anonymous that has boasted of targeting celebrities.
Black Swan star Mila Kunis was also named as a target, with hackers allegedly uncovering picture of a shirtless and 'seductive' Justin Timberlake on her phone.
One image is said to show Timberlake with pink underwear on his head while there reported to be a separate explicit shot of an unidentified male.
A fourth image is said to show Kunis in a bath, covered by the tub from the neck down.
Kunis and Timberlake, co-stars in the film Friends With Benefits, have long denied rumours of an off-screen romance.
It is not clear if the Johansson and Kunis incidents are related and the authenticity of the photos could not be verified,
Investigation: The actress, pictured here in a campaign for Mango, was named earlier this year as one of the 50 victims who had their cell phones or emails compromised by a hacking gang
'The FBI is aware of the alleged hacking incident and is looking into it,' an FBI official told FoxNews.com.
Johansson was named earlier this year as one of the 50 victims who had their cell phones or emails compromised by a hacking gang.
Target: Hackers allegedly found shirtless pictures of Justin Timberlake after tapping into Mila Kunis' phone
Sources connected to Johansson told TMZ the actress had called in the FBI to investigate the leak.
She is currently filming the super-hero film The Avengers with Chris Evans and Robert Downey Jr.
A spokesman for Johansson refused to comment.
Hacked: Selena Gomez, Miley Cyrus and Vanessa Hudgens are other alleged victims of the hackers