ICE, part of the U.S. Department of Homeland Security, confirmed it has taken action against websites alleged to be offering pirated content or selling counterfeit products. ICE told the New York Times that the seizures were part of an ongoing investigation.

More than 70 sites have been closed; domains seized include music download sites and a BitTorrent search site, Anyone visiting those sites via the original URL is informed that the domain had been taken over by ICE and referred to laws on copyright infringement and counterfeit goods.

However some of the affected sites have continued at alternative web addresses.

The ICE measures involved taking control of the domain name. It follows similar action earlier this year against nine sites.