He was expelled in September 1968 for alleged disciplinary offences.
The alleged offence needs to be pursued by the police and proven in the courts.
Auditors estimate the alleged offences cost the government up to $31bn (£18bn).
Even repeating the details of an alleged offence is illegal.
The group has since been investigated for alleged terrorism-related offences.
Roache was 35 years old at the time of the alleged offences.
Third parties not involved in the alleged offences may nonetheless file complaints.
The alleged offences involving him took place between 1964 and 1975.
In fact it's the second trial he has faced for this alleged offence.
This can include a summary of the alleged offence and any witness statements.