The Labour Party is claiming the Prime Minister addressed GCSB staff on February 29, and referred to the spy agency's work on the Dotcom case.
That's six and a half months earlier than when the Prime Minister has previously said he knew anything about the GCSB's illegal spying on Dotcom.
Leader of the Labour Party, David Shearer says John Key has contradicted himself.
“What we understand is at that John Key made a direct reference to Dotcom and GCSB’s involvement with Dotcom. That completely contradicts… that he had no recollection of being briefed.”
Mr Shearer says he is not making accusations, he is asking questions and wants to see a video taken by a staff member at the event. However he doesn’t know if the video exists and wants someone from the GCSB to come forward and give some answers.
If it exists, he says John Key should release the video to clear up what has happened once and for all.
“This cuts directly to John Key’s credibility, he keeps forgetting things.”
Watch the video for the full interview with David Shearer.