A former teacher and current ASIC senior executive has been charged with abusing a 14-year-old boy in the 1980s.
Peter Cuzner, 60 of Kaleen, pleaded not guilty on Thursday to three acts of indecency against the boy in 1986.
Cuzner was a teacher at a number of schools in the ACT, including Daramalan College, although it is not yet clear where the alleged abuse occurred.
He is currently listed as the ASIC regional commissioner for the ACT, a senior executive position, but was suspended once the organisation learned of the allegations.
Cuzner was charged after a lengthy police operation prompted by the Royal Commission into Institutional Responses to Child Sexual Abuse.
ACT Policing set up Operation Attest, a team of highly experienced child abuse investigators, last year, and revealed on Monday they were bringing four people to court this week.
Three of those cases appeared in the ACT Magistrates Court on Tuesday, including two against Marist brothers, Brother John William Chute, also known as Brother Kostka, and former Brother Gregory Sutton.
Those two Marist brothers were the focus of Canberra hearings of the child sexual abuse Royal Commission.
Cuzner attended court on Thursday, but said nothing as he left the courtroom.
His case has been adjourned for 10 weeks, and will come back before the ACT Magistrates Court in late April.
ASIC spokesman Matthew Abbott said the organisation was currently reviewing who would act as its new ACT regional commissioner.
"This is a police matter and we're unable to comment at this stage," Mr Abbott said.
"Peter was stood down as of the 28th of January."
"We're reviewing who will become the next ACT regional commissioner."
On Tuesday, the ACT Magistrates Court heard that Marist Brother Kostka was suffering dementia, and was currently seeking a ruling in separate NSW proceedings that he was not fit to stand trial.
Brother Kostka's lawyer indicated a similar approach would be taken in the ACT.
Brother Sutton may try to have proceedings against him permanently stayed. He is in Australia only due to an extradition that occurred in a past case, and there may be an argument that he cannot be charged with new offences while in the country on a separate extradition.
The third man who was due to appear on Tuesday did not attend court. There is no formal proof that he was served with a summons.
An earlier version of this story suggested Peter Cuzner worked at Marist College Canberra. This was incorrect. A reporter made the error.