Australian Federal Police officers presented Annika Smethurst,the national political editor of News Corp's Sunday tabloids,with a search warrant on Tuesday morning.
The warrant granted officers authority to access her home,computer and mobile phone.
The actions are in connection to a story published in April 2018 which revealed internal government discussions about introducing new powers for electronic intelligence agency the Australian Signals Directorate.
News Corp's report included details from a top secret internal document proposing new abilities to"proactively disrupt and covertly remove"onshore threats by"hacking into critical Âinfrastructure".
The federal police confirmed the execution of a search warrant on Tuesday as part of an"investigation into the alleged unauthorised disclosure of national security information".
In a statement,the police said they would allege the disclosure of"these specific documents undermines Australia's national security".
"No arrests are expected today as a result of this activity,"the statement said.
In an updated statement,police said the warrant was in relation to"the alleged publishing of information classified as an official secret,which is an extremely serious matter that has the potential to undermine Australia’s national security".