The Green Party has lodged a complaint with the Independent Police Conduct Authority after a court found a raid on journalist Nicky Hager's house was unlawful.
A spokeswoman for the party said a letter had been sent to the IPCA asking it to investigate whether police had been negligent or if there was any misconduct.
Last week a High Court judge ruled the 10-hour search of Mr Hager's house was "fundamentally unlawful" because police failed to disclose they were seeking a warrant for investigating a journalist.
In a letter to the IPCA, Green Party co-leader Metiria Turei said the ruling raised concerns about media freedom and conflicts between surveillance laws and protections granted under other legislation.
A spokeswoman for the Green Party said its position was that the search was politically motivated and this needed investigation.
But Police Association president Greg O'Connor yesterday called claims of political influence "ridiculous".
Comment has been sought from the IPCA.
The search at Hager's home took place in the aftermath of the release of Hager's book, Dirty Politics, which was based on information taken from WhaleOil blogger Cameron Slater's emails and online communications.
The data was given to Hager by an anonymous hacker and the search was part of the ongoing police investigation to identify that person.
Hager sought a judicial review of the way police applied for a search warrant, the subsequent granting of the application, and the way the search was carried out.