In a blog entry posted last night, Sony confirmed that pre-order versions of Grand Theft Auto V let people access songs and other assets from the game ahead of launch.
"Regrettably, some people who downloaded the digital pre-order of Grand Theft Auto V through the PlayStation Store in Europe were able to access certain GTA V assets. These assets were posted online," the post said.
Sony has now removed the digital pre-order file, and has apologised to Grand Theft Auto fans and to Rockstar for the spoilers being revealed.
Grand Theft Auto V is released on September 17.