Mila Kunis HACKED!

Mila Kunis is the latest celebrity whose cell phone has been hacked, and the hacker is leaking several pictures of a seductive Justin Timberlake ... TMZ has learned.

Four pictures have been leaked, including two which show Justin -- one, laying shirtless in a bed, and another in which J.T. is jokingly sporting a pair of pink panties over his head. Kunis is not featured in either of the pics.

There's another photo of Mila in a bathtub, but all you see is her head. And then there's another photo of a male which is explicit in nature, although his identity is a mystery.

There are also some texts and the hacker claims they reveal exchanges between Justin and Mila.

As we first reported, we're told Scarlett Johansson is going to the FBI today after nude photos of her that were hacked from her cell phone were published this morning.

We could not reach Kunis for comment.

Scarlett Johansson Tapping FBI Over NUDE Photo Leak

Scarlett Johansson appears to be the latest victim of a nude photo HACKER -- after multiple self-shot naked cell phone pics of the actress appeared on a popular website this morning.

Sources connected with Scarlett tell us ... the FBI will be contacted this morning because they believe this is a criminal act.

The FBI has been involved in several celebrity nude photo hacking situations in the past year -- involving Vanessa Hudgens, Jessica Alba and more.

Oscar Winner, Olympic Medalists Targeted by Hacker

The growing list of celebs targeted by a hacker ring now includes the names of an Academy Award winning actress and two gold medal winning Olympians ... TMZ has learned.

Sources connected to the hackers tell TMZ ... Natalie Portman (Oscar winner for "Black Swan"), Lindsey Vonn (Gold medal skier in 2010), and Carly Patterson (all-around Gold in gymnastics in 2004) are all among the women who have been targeted by a ring of hackers who have gained access to over 100 active email addresses of celebrities, politicians and sports stars.

We're also told Dianna Agron from "Glee" has been targeted as well. And a prominent 17-year-old actress was also hacked ... though we're not releasing her name.

As TMZ first reported, the hackers have snagged nude photos from many female stars, including Vanessa Hudgens, Ali Larter, Busy Philipps, Scarlett Johansson, Miley Cyrus, Jessica Alba, Addison Timlin and Renee Olstead.

We're told the FBI knows the identity of the ringleader ... but no arrests have been made so far.

Politicians, Sports Stars Targeted By Hacker Ring

The hackers who are now being investigated by the FBI for allegedly pilfering nude photos and videos of 50 Hollywood celebrities have also been targeting sports stars and D.C.'s most powerful.

Sources connected to the hackers tell TMZ ... the cyber-crooks currently have 100 active email addresses of celebrities, politicians and sports stars. We do not know the identity of the sports stars or politicians, but they are all high-profile.

TMZ broke the story ... the hackers have snagged nude photos and videos from female stars including Vanessa Hudgens, Scarlett Johansson, Jessica Alba, Christina Aguilera, Ali Larter and Demi Lovato. There are no male celebs on the list.

The FBI knows the identity of the ringleader, law enforcement sources tell TMZ.

As for Vanessa Hudgens, our sources say the hackers may have obtained the pictures and videos through a friend who betrayed the actress.

Vanessa Hudgens Sits Down With FBI

Law enforcement sources confirm with TMZ ... it was none other than the FBI that met with Vanessa Hudgens yesterday about the nude photos that were hacked from her Gmail account.

The FBI went to Vanessa's lawyer's office to meet with her in Century City, CA. The meeting lasted more than an hour and agents got info that we're told leads to one individual who may have hacked 50 A-list celebs.

We're told Scarlett Johansson was hacked by the same individual, who leads a ring of hackers.

The pic (above) shows Vanessa leaving her lawyer's office after the FBI chitchat.

Authorities Close in on Celeb Hacker Ring

Vanessa Hudgens met with law enforcement today over nude photos and video that were hacked from her Gmail account, and TMZ has learned authorities believe as many as 50 other celebrities may be victims as well.

Sources tell us ... the FBI is conducting a wide-ranging investigation into a ring of hackers, and agents believe all 50 celebs trace back to one person -- possibly the ringleader.

Sources say one of the other celebs is Scarlett Johansson, who had a nude picture hacked from her iPhone.

The ring has been hocking some of the photos and video to various Internet sites and others, but we're told the primary motivation is not money -- it's the thrill of hacking.

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