The Entertainment Software Ratings Board (ESRB) has announced an investigation into sexually explicit content that is hidden in a popular PC version of the videogame titled Grand Theft Auto: San Andreas.

The investigation was persuaded by comments from California Assemblyman Leland Yee who ignited a controversy by discussing a sexually explicit mini-game that is integrated within the game itself. The mini-game is accessible via an Internet downloadable "Hot Coffee" modification patch that unlocks certain areas of the game.

The ESRB has opened an investigation surrounding the "Hot Coffee" modification, said Patricia Vance, President, ESRB.

Rockstar Games commented, "We can confirm the ESRB is conducting an investigation and that we will be complying fully with their enquiries. We thoroughly support the work of the ESRB, and believe that it has an exemplary record of rating games and promoting understanding of video game content." (Original Quote by 1UP.com)

According to ESRB, the first and foremost step in the investigation is to determine if the sexually explicit content was already in the game or was it something added via modifications by gaming enthusiasts. Rockstar stated that it hopes ESRB would continue on with its initial "M (Mature)" rating.

ESRB said if the organization found Rockstar as the guilty party, it would take appropriate action to deal with the situation.

Meanwhile, The National Institute on Media and Family issued a press release warning parents against the game and its content. "We are calling upon Rockstar Games to come clean with the ESRB, the nation's retailers, and especially America's parents," said David Walsh, Psychologist. "What is your involvement in the production and distribution of pornographic content in your game?"