Heavy metal band Metallica has collected the names of 335,000 people who it says are violating copyright laws by sharing the band's music online.

According to a CNET story, the band, which is suing MP3 company Napster for alleged copyright infringement, is due to deliver a 60,000 page document to Napster today. Metallica will ask Napster to block the named individuals from using its service.

The Napster software allows users to share music files in their hard drives with others users online. It's possible to track users to specific computers.

Napster denies violating copyright laws, and claims it simply provides a directory of music. Any individuals, it says, found violating copyright will be blocked from the service. The company has not commented on the latest news, according to CNET.