The independent MP Andrew Wilkie has said he will most likely support debate over a motion of no-confidence in the Gillard government following the "appalling events" of Australia Day.

Mr Wilkie says it is almost inconceivable that the Prime Minister's former media adviser Tony Hodges acted independently when he informed a Labor unionist of the whereabouts of Opposition Leader Tony Abbott before the Australia Day tent embassy protest.

" I will only support motions of no confidence in the event of serious misconduct and not support politically opportunistic motions" ... Independent MP Andrew Wilkie. Credit:Alex Ellinghausen

"The events on Australia Day were appalling," Mr Wilkie said. "With so many claims and counter-claims swirling around, there remain many unanswered questions. If the opposition was to move a no-confidence motion over this, I would probably support a suspension of standing orders to debate the matter, subject of course to the exact wording of the motion."

Mr Wilkie stood by his threat as the Australian Federal Police confirmed today there was no evidence to support an investigation into a breach of Mr Abbott's security.