Police Raid File-Sharing Site Founder's Mansion

New Zealand police raided several homes and businesses linked to the founder of Megaupload.com, a giant Internet file-sharing site shut down by U.S. authorities, on Friday and seized guns, millions of dollars, and nearly $5 million in luxury cars, officials said.

Police arrested founder Kim Dotcom and three Megaupload employees on U.S. accusations that they facilitated millions of illegal downloads of films, music and other content costing copyright holders at least $500 million in lost revenue. Extradition proceedings against them could last a year or more.

With 150 million registered users, about 50 million hits daily and endorsements from music superstars, Megaupload.com was among the world's biggest file-sharing sites. According to a U.S. indictment, the site, which was shut down Thursday, earned Dotcom $42 million in 2010 alone.