Lawyer Anatoly Kucherena showed a photocopy of the document given to Mr Snowden US intelligence leaker Edward Snowden has left the Moscow airport where he had been staying since June after being granted temporary asylum. Mr Snowden's lawyer said he had left after receiving the papers he needed to enter Russian territory from Sheremetyevo Airport's transit zone. The US has charged Mr Snowden with leaking details of its electronic surveillance programmes. Russia's decision is likely to further strain its ties with the US. The BBC's Daniel Sandford in Moscow says a strongly worded US reaction can be expected shortly. Mr Snowden arrived in Moscow on 23 June from Hong Kong, after making his revelations. The affair has caused diplomatic ructions around the world, upsetting the United States' close allies and traditional enemies. 'Most pursued man' Mr Snowden left the airport at about 14:00 local time (10:00 GMT), the airport press office told the BBC. Despite a heavy presence of journalists, his departure was apparently not spotted by media. His lawyer, Anatoly Kucherena, said: "His location is not being made public for security reasons, since he is the most pursued man on the planet. "He himself will decide where he will go." The whistleblowing organisation Wikileaks, which has been helping him since he made his revelations, said in a tweet that he had been given asylum. "Edward Snowden was granted temporary asylum in Russia for a year and has now left Moscow airport under the care of Wikileaks' Sarah Harrison," it said. Ms Harrison is a member of the Wikileaks legal team and has been helping Mr Snowden. Mr Kucherena also said he had been awarded temporary asylum and showed a photocopy of the document issued to his client. The document, which resembles a Russian ID card and features a fingerprint, shows an issue date of 31 July and expiry date of 31 July 2014. 'Rather insignificant' US Attorney General Eric Holder has given Moscow an assurance that Mr Snowden will not face the death penalty if extradited. But the Russians say they do not intend to hand him over. Russian President Vladimir Putin said previously that Mr Snowden could receive asylum in Russia on condition he stopped leaking US secrets. Mr Putin's foreign policy advisor Yury Ushakov said the situation was "rather insignificant" and should not influence relations with the US. "We know what sort of noise surrounds this [situation] in America, but we have not received any signals from the United States," he said. Edward Snowden fled to Moscow from Hong Kong in June US President Barack Obama is due to visit Moscow next month. Mr Obama was holding a private meeting with US legislators in the Oval Office on Thursday to discuss the surveillance programmes run by the National Security Agency (NSA). Among the information leaked by Mr Snowden, which first surfaced in the UK's Guardian newspaper in early June, was the revelation that the NSA was collecting the telephone records of tens of millions of Americans. The systems analyst also disclosed that the NSA had tapped directly into the servers of nine internet firms including Facebook, Google, Microsoft and Yahoo to track online communication in a surveillance programme known as Prism. Prism was allegedly also used by Britain's electronic eavesdropping agency, GCHQ. The agency was further accused of sharing vast amounts of data with the NSA. Allegations that the NSA had spied on its EU allies caused indignation in Europe.