NSA also serves economic interests: Snowden interview

The US National Security Agency sometimes uses data it collects for economic purposes, intelligence leaker Edward Snowden revealed in an extract of an interview with a German television station broadcast yesterday.

"If there is information, for example on Siemens, which is in the national interest, but has nothing to do with national security, they will still use this information," Snowden said.

The interview was carried out by a journalist for NDR, a regional chain belonging to public broadcaster ARD.

Under top secrecy, the chain last week in Moscow filmed the first interview with Snowden since he left Hong Kong last year to seek refuge in Russia.

On its website, NDR said Snowden said he was no longer had any confidential documents, as they had all been handed out to handpicked journalists. He said he no longer wanted to, or was able to, take part in any future revelations.

Other than the consequences of his revelations about NSA surveillance programmes, in the interview Snowden was also to address "his personal path" to leaking the information.