Labour leader Phil Goff says questions remain over how a right-wing blogger asked the SIS for a confidential document about a briefing he had with the spy agency.
Questions also remained over why the SIS released the material with such urgency - four working days after receiving the request under the Official Information Act. Most requests are either rejected outright or take at least three weeks to action.
Central to the issue is whether Mr Goff was briefed by SIS director Warren Tucker about the suspicious flight of Israeli nationals from Christchurch after the February earthquake.
A document released to blogger Cameron Slater on Thursday by the SIS titled "Investigation into Israeli Nationals in Christchurch" (and heavily blacked out) has a diary note on the top corner "read by/discussed with Mr Goff 14 Mar 11".
Slater, who writes the WhaleOil blog, requested, among other things, "copies of diary notes made at the time or subsequent to the March briefings to [Mr Goff]".