Scarlett Johansson calls in the FBI

Scarlett Johansson has reportedly called the FBI after alleged nude photos of her were stolen from her cell phone.

One picture appears to show her holding a towel with her butt reflected in a mirror, while another reveals her to be topless lying on a bed both appeared on several websites on Wednesday, leading the FBI (Federal Bureau of Investigation) to be drafted in by The Avengers star.

The 26-year-old actress’ publicist has so far refused to comment on the probe or reveal if the images — which also feature one showing a tattoo the screen beauty has been pictured displaying before — are genuine, but her representatives contacted the agency because they believe a criminal act has taken place, according to TMZ.

Friends with Benefits costars Mila Kunis and Justin Timberlake are also thought to be the victims of hackers after photos of the pair, including a shirtless snap of the The Social Network actor, were leaked.

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

Eimiller did not name any of the alleged victims “due to the pending nature of our investigation”.

Earlier this year, a group of hackers were reported to have stolen nude photos from the phones of up to 50 celebrities, including Jessica Alba, Christina Aguilera, Miley Cyrus and Vanessa Hudgens.

Vanessa met with FBI agents in March to discuss hacking of her emails.