The Australian Federal Police made the decision to raid Home Affairs Department offices in Canberra, Peter Dutton says.
Home Affairs Minister Peter Dutton has denied triggering a raid on his own federal department by police investigating the leaking of emails relating to the au pair saga.
"I knew nothing of the raid, it's an issue for the AFP," he told reporters in Brisbane on Friday.
"The AFP make their own decision about the execution of warrants and investigation of matters. It is nothing to do with me as the minister."
The Department of Home Affairs offices in Canberra were raided on Thursday after the AFP agreed to investigate the leak on August 30.
The internal emails showed Mr Dutton's office demanded an au pair detained at Brisbane airport be given urgent consideration for a visa.
The minister had told parliament he did not know the nanny's employer, but t was later revealed to be a former colleague from his time as Queensland police officer.
Mr Dutton maintained they had not spoken in the 20 years prior to the visa assistance.
The emails also showed the department expressly disagreed with Mr Dutton's push to give a visa to another au pair detained in Adelaide in November 2015, who was linked to a relative of AFL boss Gillon McLachlan.
In response to the raids, Opposition Leader Bill Shorten renewed calls for a national integrity commission to increase trust in government.
"I am not aware of corruption at the highest levels, but what I am aware of is people are not satisfied that transparency is there," Mr Shorten told reporters in Melbourne on Friday.
"If the Morrison government has nothing to hide, then they have nothing to fear from a national integrity commission."
The AFP is expected to hand any seized material to the Clerk of the Senate, as Labor senator Louise Pratt on Thursday claimed parliamentary privilege over it.