Three Swedish members of parliament have met with fugitive US intelligence agent Edward Snowden at a secret location in Moscow to discuss mass surveillance, Swedish media reports say.

The visit was organised by the Right Livelihood Award Foundation, a Stockholm-based organisation that honoured Snowden with a human rights prize in September 2014.

"We discussed his journey and he gave us a nuanced account of how mass surveillance works and what doesn't work," MP Jakop Dalunde of the Greens Party told public broadcaster SVT.

"He also gave us his point of view on what constitutes effective anti-terrorism measures and what doesn't," he added.

Dalunde was joined at the meeting by Liberal Party MP Matthias Sundin and Cecilia Magnusson of the conservative Moderate Party.

"I was invited by the Right Livelihood Foundation and for me it was self-evident to say yes," Sundin said.

Their meeting lasted two hours.

Snowden, a former National Security Agency contractor, has lived in exile in Russia since 2013 after revealing the unprecedented extent of US state surveillance.