Includes sexual references, prostitution, lap dancing and an un-detailed portrayal of masturbation, says BBFC.

Grand Theft Auto IV screenshot

Extended details found in the recently published GTA 4 BBFC classification have revealed new details about the sexual content of Rockstar's anticipated title. This includes sexual references, prostitution, lap dancing and portrayed masturbation.

"Sex references also occur during cut scenes, including references to strong sexual behaviour," states the BBFC classification. "During gameplay the character can pick up prostitutes... What follows is an un-detailed portrayal of masturbation, fellatio and intercourse. The character can also visit lap dancing clubs and request a private dance. While the game contains sexualised dancing and the portrayal of sex, there is no sexualised nudity."

GTA 4 is scheduled for release on April 29 for Xbox 360 and PlayStation 3.

The BBFC listing has since been removed from the website. Game spoilers have been removed from the image below at the request of Rockstar. For more on the game head over to the GTA 4 game page.

Update: The BBFC has contacted VideoGamer.com explaining why the GTA 4 extended classification information disappeared almost as soon as it was published.

"We have taken this down because we have a policy which is that we will not put up the ECI for a work more than 10 days before the work is released. Due to a technical hitch we put up the ECI for GTA IV too soon. We will be putting up the full, unedited ECI on the 19th of April," explained a BBFC spokesperson.