A career-ending misjudgment
Trent Madders, a 52-year-old former Detective Leading Senior Constable with the Australian Federal Police (AFP), was sentenced to jail on Friday, August 21, 2026, in the ACT Supreme Court. Madders, who served over two decades in law enforcement, pleaded guilty to a single charge of perjury, an offense Justice David Mossop described as a “tragic misjudgment” that undermines the integrity of the criminal justice system.
Madders will serve four months behind bars before being released under a 12-month good behaviour order. The conviction stems from his role as the lead investigator in a 2019 case involving twin brothers Joshua and Kenan Tiffen, who were accused of secretly filming female tenants. During the 2020 ACT Magistrates Court proceedings, Madders falsely testified that specific digital evidence—a laptop and mobile phone—had been examined within a mandatory 30-day window, despite emails proving the examination occurred outside that timeframe.
Institutional stakes and procedural integrity
The perjury charges carry significant weight for the ACT justice system. The Tiffen brothers’ initial 2022 conviction was overturned on appeal in 2023 because the evidence was deemed to have been obtained unlawfully due to the procedural breach Madders attempted to hide. While the brothers were re-convicted in 2025 without the tainted evidence, the delay and the necessity of a re-trial highlight the systemic impact of officer misconduct.
Prosecutor Keegan Lee emphasized that Madders’ actions were not a momentary lapse but a deliberate cover-up. “He makes the lie on my count five times, he adheres to it when he is given opportunities to correct it,” Lee told the court, arguing that the conduct “strikes at the heart of the administration of justice.”
The human cost of high-stress policing
The defense argued that Madders, a member of the AFP’s Sexual Assault and Child Abuse Team, was suffering from severe occupational burnout. Barrister Beth Morrisroe stated that the team was “chronically under-resourced and underfunded,” and that Madders had been subjected to traumatic material as part of his duties, including graphic child abuse imagery. She noted that Madders, who had no prior criminal record, described his decision to lie as “the dumbest thing he’s ever done.”
Justice Mossop acknowledged these mitigating factors, including Madders’ remorse and low likelihood of reoffending, but maintained that the necessity of general deterrence outweighed personal circumstances. The former detective, who has been suspended from the AFP since 2024, now faces an internal investigation into his conduct, further clouding his professional future.