MOSCOW, July 24 (RAPSI) - The Russian Federal Migration Service issued fugitive US intelligence leaker Edward Snowden a permit that allows him to finally leave the Sheremetyevo International Airport transit zone, a law enforcement source told RIA Novosti Wednesday.

The source added that the approval of the Border Guard Service will be required.

According to another source in the Sheremetyevo Airport, lawyer Anatoly Kucherena, head of the Civic Chamber and Snowden's current legal advisor, will arrive to the airport shortly to meet with Snowden and go over the formalities.

Edward Snowden, 30, admitted to leaking a secret court order to the media in early June, according to which US telecom company Verizon was required to provide data from millions of customers to the US authorities for three months. He also claims an Internet scouring program code-named PRISM allowed the NSA and the FBI to tap into nine US Internet companies and to gather all kinds of information from users, including videos, emails, searches and images.

On June 14, the US authorities charged Snowden under three articles, each of them stipulating punishment of up to 10 years in prison. Two of the charges were brought under the 1917 Espionage Act.