Former National Security Agency (NSA) leaker Edward Snowden's father Lon Snowden has obtained documents to visit his son soon in Russia, Lon and his lawyer Bruce Fein?Saturday told ABC's This Week.

Former National Security Agency (NSA) leaker Edward Snowden.?[File photo]

"We have visas, we have a date, which we won't disclose right now because of the frenzy," Mr Fein said.

Anatoly Kucherena, Snowden's lawyer in Russia, said last week he had sent Lon Snowden the required invitation to visit Russia, a step toward securing a visa. He said he hoped a visit would happen in the coming days.

The former U.S. National Security Agency contractor, who has been charged with espionage for revealing the secret U.S. electronic surveillance program Prism, left Moscow's Sheremetyevo international airport on August 1st as he was granted one year asylum by Russia.

Snowden arrived at Sheremetyevo international airport on June 23, where he was stranded for six weeks after the U.S. revoked his passport.

U.S. President Barack Obama canceled his meeting with Russian counterpart Vladimir Putin in September over Kremlin's decision to grant Snowden a temporary asylum.