A Russian lawyer for former NSA systems analyst Edward Snowden says he wants to return to the United States if he's guaranteed a fair trial.

Anatoly Kucherena said at a news conference Tuesday that he has teamed up with U.S. and German lawyers to work on the issue, but gave no further details.

Snowden was stranded in a Moscow airport in 2013 on his way from Hong Kong to Cuba, shortly after he released extensive documentation about the National Security Agency's surveillance programs. Russia has granted him asylum, attracting the ire of the United States.

Russian President Vladimir Putin has denied that the nation's security agencies had worked with Snowden.

Snowden's whereabouts have not been made public. Kucherena said Snowden moves freely but is accompanied by guards.