He began a 20-year jail sentence in 2001 for 24 sexual offences occurring between 1985 and 1995. In 1996, a Royal Commission chaired by Justice James Woods was shown home videos and photographs from Dunn"s collection, which included many images of child sex abuse, usually featuring Dunn himself as the perpetrator. Dunn fled the country, but was later found in Honduras after being tracked down by Australia"s 60 Minutes program
Former United States. Secretary of State Madeleine Albright authorised his extradition back to Australia after he was deported from Honduras to the United States.
Dunn had a long history of abusing boys between the ages of seven and fifteen years old, often videotaping them. Usually, he would offer them money and marijuana in exchange for anal sexual
From jail, he repeatedly made written and verbal statements to the effect that he saw nothing wrong with sex between a man and a boy. He previously spent time in Indonesia and the Netherlands.
In 2004 Dunn underwent coronary bypass surgery after suffering from angina.
Believed to be at high risk of retaliation from other prisoners, he was isolated from the main prison population. Dunn died on 11 July 2009, aged 68, from multiple organ failure. He would not have been eligible for parole until 9 November 2015.