Susan Crennan is among the appointments to the commission set up by the Australian Olympic Committee (AOC), with the barrister having served as a justice of the High Court of Australia for 10-years.

The 71-year-old retired from the post in 2015 and is the sole woman appointed to the independent committee.

She is joined by Ian Callinan, who served in the High Court between 1998 and 2007.

The committee is completed by Greg James, a former judge of the Supreme Court of New South Wales.

“In appointing the Committee, the AOC Executives have delegated the power to determine the complaint, made under the AOC Ethical Behaviour By-Law, in the Committee’s sole and absolute discretion,” an AOC statement read.

“The formal appointment will be made on Monday 1 May 2017, with the request that the Committee’s determination be made on or before 1 June 2017.”

The committee will investigate the complaint made by former AOC chief executive de Jong against Tancred, who has temporarily stepped down as the organisation's director of media and communications.

De Jong has claimed a fellow AOC official had accused her of leaking Board discussions, which she denied and lodged a complaint to Coates.

She claimed Tancred then called her demanding the complaint to be withdrawn before issuing a threat.

De Jong has reportedly claimed that, four months after lodging a complaint against Tancred, she has yet to hear any update.

Four further allegations have been reported by Fairfax Media, with three unnamed women reportedly making either informal or formal complaints.

Ryan Wells, who worked for the AOC between 2000 to 2005, has also alleged he was threatened.

The Committee will only investigate the complaint made be de Jong.

Tancred has denied all allegations made against him.

A separate independent review overseen by incoming chief executive Matt Carroll will assess workplace practices at the AOC.

De Jong questioned the independence of the review yesterday, stating that Carroll would be placed in a difficult position to lead the assessment.

"I would question the ability of any CEO to be truly independent and impartial in circumstances that the CEO was to become aware of an allegation against an individual to whom he or she reports," de Jong told the Australian Broadcasting Corporation.

"That is, any other members of the Board or indeed a President.

"Why can't it just be a fully independent commission as has been the case established to hear my complaint?"

The independent committee and the workplace review were both announced by the AOC, following a crisis board meeting on April 26.

The committee’s appointment comes in the build-up to the AOC Presidential election on May 6, where incumbent Joan Coates faces the challenge of Atlanta 1996 hockey gold medallist Danielle Roche.