STOCKHOLM (Reuters) - A co-founder of the free file-sharing website Pirate Bay was extradited to Sweden on Tuesday to begin a one-year jail sentence for breaching copyright laws and was held by authorities as part of a separate hacking investigation.
Gottfrid Svartholm Warg, a 27-year-old Swede, fled to Cambodia after being convicted in 2009 of Internet piracy in Sweden. He was arrested in late August and extradited on Monday.
On arrival in Stockholm, Warg was detained on suspicion of hacking into computers at a company that manages data for the Swedish tax authority.
The Prosecution Authority said in a statement it wanted to question Warg as part of an investigation into data infringement involving outsourcing firm Logica and the tax authority.
The hacking of Logica's systems was discovered in March. The tax authority said at the time the hackers had gained access to information on several people with protected identities.
The trial of Svartholm Warg and three other backers of Pirate Bay, one of the world's biggest free file-sharing sites, marked a victory for Hollywood studios that took Sweden to task for failing to protect copyright.
The four men denied any wrongdoing.
Svartholm Warg appealed that verdict but failed to attend the hearing, citing a medical condition. He subsequently surfaced in Cambodia.
Launched in 2003 and still running despite the legal action against its founders, Pirate Bay provides links to music and movie files stored on other users' computers.
Swedish subsidiaries of prominent music and Hollywood film companies sued the company for damages. Media firms have also taken steps to block the site in other countries, including the Netherlands and Finland.
Svartholm Warg landed at Stockholm's Arlanda airport on Tuesday before being taken into custody at the city's central police station, said Swedish police official Bertil Olofsson.
Pirate Bay says it does not hold copyrighted material on its servers and that no exchange of files actually takes place there, so it cannot be held responsible for what material is being exchanged.
The organization that now runs the website is registered in the Seychelles.
(Reporting by Niklas Pollard; additional reporting by Anna Ringstrom in Stockholm and Pral Chan Thul in Phnom Penh; Editing by John Stonestreet and David Cowell)
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