Jennifer Lawrence's attorney is locked in a battle with bosses of a porn website over the copyright of leaked intimate photographs of the actress.

The Hunger Games star hit headlines on Sunday (31Aug14) when nude pictures of her were leaked on the Internet along with a number of other female celebrities including Kate Upton and Kirsten Dunst.

Lawrence's representative blasted the "flagrant violation of privacy" and threatened legal action against anyone who shared the snaps.

Since the leak, Lawrence's attorney has embarked on a battle to remove the pictures from various websites, but bosses of one porn site have refused to take them down because the actress does not own the copyright to the entire set.

The site's officials are arguing that not all the pictures were taken by Lawrence, so whoever snapped the shots owns the copyright, according to They are demanding proof of the actress' rights or the name of the photographer.

America's Federal Bureau of Investigation (Fbi) is investigating the scandal.