The Motion Pictures Association of America (MPA) has served BT with a court order, asking it to block access to Newzbin2, a Usenet website accused of hosting copyright infringing material.
Previously, the European division of the MPA had complained against the Newsgroup website, leading to the courts shutting Newzbin2 down.
However, the website was shortly back online and continued to provide access to and host illegal or copyright infringing material.
The MPA has managed to get an injunction order against BT under the Section 97A of the UK Copyright, Designs and Patents Act. BT had earlier refused to block the website.
“In launching this case, the MPA is aiming to secure an order that will enable BT to block Internet access to the site, thus preventing the site from using the Internet to make money through infringement,” the MPA said in a statement to Torrent Freak.
A BT spokesperson said: "We can confirm that we have received the papers from the MPA and are reviewing them. We will respond in due course."