Twentieth Century Fox has subpoenaed Google’s YouTube service over the availability of Simpsons and 24 episodes on the video-sharing site, according to the Wall Street Journal (WSJ).

Fox, owned by News Corp, filed the subpoena a week ago, according to the newspaper, in a bid to force YouTube to reveal details of the person who uploaded pirate copies of the two hit TV shows. The WSJ says that Fox requested that if the details weren’t handed over immediately, YouTube should disable its service.

It’s the latest in a long line of line of disputes involving the availability of copyright content on YouTube. The company is currently in discussions with a group of Japan's major TV broadcasters which complained to YouTube in early December about copyright content being made freely available on the site.