Sep 1, 2014 2 min read

LOS ANGELES (AP) – Jennifer Lawrence contacted authorities to investigate who stole and posted nude images of the Oscar winner online, a publicist for the actress said.

Intimate images of the actress, who stars in “The Hunger Games” film franchise and won an Academy Award for her role in “Silver Linings Playbook,” began appearing online Sunday. Naked images purporting to be of other female stars were also posted, although the authenticity of many couldn’t be confirmed. The source of the leak was unclear.

“This is a flagrant violation of privacy,” Lawrence’s publicist Liz Mahoney wrote in a statement. “The authorities have been contacted and will prosecute anyone who posts the stolen photos of Jennifer Lawrence.”

Mahoney declined to provide further details, including which authorities were contacted. Lawrence, 24, is a three-time Oscar nominee.

Actress Mary Elizabeth Winstead also confirmed that nude photos of her were posted online.

“To those of you looking at photos I took with my husband years ago in the privacy of our home, hope you feel great about yourselves,” Winstead posted on Twitter. Winstead, who starred in “Final Destination 3” and “Abraham Lincoln: Vampire Hunter,” wrote she thought the images were destroyed.

“Knowing those photos were deleted long ago, I can only imagine the creepy effort that went into this,” Winstead wrote.

The FBI has investigated previous leaks of nude celebrity images, including leaks involving Scarlett Johansson, Mila Kunis, Christina Aguilera and footage of television sports reporter Erin Andrews in a Tennessee hotel room. Those cases resulted in convictions.

FBI spokeswoman Laura Eimiller declined comment on whether the agency was involved.