Ms Higgins went public in February with allegations a former colleague had raped her in the office of federal government minister Linda Reynolds when the pair worked together at Parliament House in 2019.

Police officers investigating the claims last month handed ACT Director of Public Prosecutions Shane Drumgold SC a partial brief of evidence and asked him to "provide advice for consideration of prosecution".

On Thursday, Mr Drumgold told The Canberra Times he had given police his advice on June 28, a week after receiving the request.

"The content of that advice is subject to legal professional privilege, and cannot be disclosed by the [Office of the Director of Public Prosecutions]," he said.

An ACT Policing spokesman subsequently confirmed the force was still looking into the matter.

"The investigation in relation to an alleged assault at Parliament House in 2019 remains active and ongoing," the spokesman said.

ACT chief police officer Neil Gaughan has previously said it was crucial to "be methodical" and "get this right".

A team of five police officers, led by a detective inspector, has been assigned to the investigation.

It remains unclear whether they have interviewed Ms Higgins' alleged rapist.

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