Japanese companies plan to cut off the Internet connection of anyone who illegally downloads files in one of the world's toughest measures against online piracy, a report said Saturday.

Faced with mounting complaints from the music, movie and video-game industries, four associations representing Japan's Internet service providers have agreed to take drastic action, the Yomiuri Shimbun said.

The newspaper, quoting unnamed sources, said service providers would send e-mails to people who repeatedly made illegal copies and terminate their connections if they did not stop.