The hackers, who claimed as the supporters of WikiLeaks, infiltrated to the Swedish government, http://www.regeringen.se/, and made it offline for more than 12 hours.
Swedish media reported that they are unable to login to the government website on Thursday, Dec 9. The report added that while trying to login, message displayed that "server could not be reached".
WikiLeaks founder Julian Assange was arrested after an arrest warrant issued by Swedish court. He was charged with rape and sexual molestation charges.
Earlier, WikiLeaks supporters had hacked the websites of Visa, which refused to take donations to WikiLeaks, and former Alaska Governor Sarah Palin, who described WikiLeaks Founder Assange as "an anti-American operative with blood on his hands".