Bill Shorten has labelled police raids on a Labor senator's office and the home of a staffer "extraordinary and unprecedented".
The opposition leader also accuses Prime Minister Malcolm Turnbull of going to extraordinary lengths to stop Australians finding out the truth about cost blowouts in the national broadband network rollout.
"He is going after whistleblowers and he's smearing his political opponents," Mr Shorten told reporters in Sydney on Friday.
Mr Shorten said he had spoken with the police commissioner at 5pm Thursday for one minute, having missed a call an hour earlier.
"He indicated the fact that the AFP were going to visit the senator's office and that was the extent of the conversation," Mr Shorten said.
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The Labor leader said Mr Turnbull's integrity, not that of the AFP, was in question.
"I understand Mr Turnbull's embarrassment that he doesn't want the truth out but I believe in an Australia where the media can publish, where journalists can do their investigations without fear or favour," Mr Shorten said.
