Parliamentary Joint Committee on Law Enforcement Chair Helen Polley has launched an investigation into whether any confidences were breached by Greens Senator Lidia Thorpe over her relationship with ex-bikie boss Dean Martin while a member of the committee.

The Labor MP has directed the committee’s secretariat to examine all previous minutes taken during meetings when the Australian Federal Police gave confidential briefings which had a “broad approach” to organised crime and motorcycle gangs.

The secretariat will flag meetings when both the Australian Federal Police and Senator Thorpe were in attendance, as well as instances when she was in attendance during AFP briefings on organised crime and motorcycle gangs.

Senator Polley will also call an emergency meeting of the committee next week to remind all members of their responsibilities, warning any breach would place the public trust in their work into jeopardy.

In an interview with The Australian, Ms Polley said Senator Thorpe should remove herself from all positions of leadership within the Greens and “seriously consider” whether the Senate was “really a place for her”.

“The secretariat is examining all our minutes to see what transactions took place while Lidia was in attendance at meetings and whether she was in attendance during briefings from AFP that might have had a broad approach to organised crime and motorcycle gangs,” Ms Polley said.

“I am confident that the secretariat is undertaking that work, and this will be something that we address,” Ms Polley said. “I will address it at our next meeting, to make sure everyone is aware of their responsibilities.

“The issue really is one of perception, so whether or not they attended a briefing, we do have access to confidential material, and it's about public perception and because of that people’s relationships must be disclosed.”

Senator Polley emphasised the seriousness of Senator Thorpe’s failure to disclose her relationship with former Rebel gang Victorian president Dean Martin while sitting on the committee, given the highly sensitive nature of information they are privy to.

“We rely on confidentiality because of the very sensitive nature of briefings we undertake, and any conversations we are having particularly from the AFP, that we have the confidence that the material stays within the committee," Senator Polley said.

“I think this is a very serious breach of faith, with her involvement, it's a very serious issue and it goes to integrity and judgement and whatever Mr Bandt chooses to do is entirely up to him but I think we’re all trying to restore faith in the political system.

“I think she should remove herself from all positions frankly, as it's a very serious breach of trust and poor judgement. Maybe she should think about whether the Senate is really a place for her.”

Greens leader Adam Bandt earlier said Senator Thorpe denied any information was shared with Martin. "Thorpe has told me at no stage was there any breach of the rules of those committees and their work, and no sharing of confidential information," he said.