Bropho was arrested and charged last year after luring a nine-year-old girl from a park with the intention of sexually abusing her.
The 40-year-old, who was raised in the same house as Cleo Smith’s alleged kidnapper Terence Kelly, appeared in Perth’s District Court on Tuesday for a sentencing hearing.
He had previously pleaded guilty to two counts of indecent dealing with a child under 13, and one of encouraging a child to perform a sexual act.
During the hearing, Bropho reportedly told the court he wanted to stay in prison so he would not get into any trouble.
“Detectives from the Major Crime Division are attending the prison to establish the circumstances surrounding the death in custody,” reads their release.
The incident on Thursday caused parts of the prison to be put into lockdown, creating havoc for scheduled court appearances via video link from the facility.
Bropho approached a young girl while she was playing at a park in Perth’s Doubleview on July 12 last year.
“[He] coerced her to a nearby residence, where he indecently dealt with her,” police alleged in a statement at the time.
“The girl was able to leave the house and alert family members of the incident.”
Soon after, officers swarmed Bropho’s home and he was taken into custody.