Leaked AFP document 'puts lives at risk'
Federal Police Commissioner Tony Negus has ordered an investigation into how a secret police document ended up with Liberal Senator George Brandis.
Mr Negus says the release of the internal police document could put officers' lives at risk.
Senator Brandis quoted the document - a secret police minute about cuts to air security officers - during a Senate estimates hearing.
He wanted to make it public by tabling it but subsequently agreed not to because the police argued it would reveal too much about operational matters.
Mr Negus says he wants to find out how it was leaked.
"I have also instructed immediately that our professional standards area look at how this document was released from the AFP and ended up where it is now," he said.
"So there will be an investigation in regards to that, because again the release of documents to this classification which detail operational activity puts my own officers' lives at stake."
Senator Brandis says the document reveals cuts to the air marshals program that were otherwise not spelled out in the AFP's budget papers.