A man who allegedly took a pipe bomb and two guns into Royal Perth Hospital has been sentenced to 18 months behind bars for unrelated child sex offences.
Aaron Lee Priemer, 29, was sentenced in the West Australian District Court on Friday to a minimum of nine months behind bars after pleading guilty to 11 charges.
The court heard he communicated with an undercover police officer posing as a 13-year-old girl in 2009, exposing them to indecent matter and trying to engage them in sexual activity.
Priemer cried when he was interviewed by police, saying: "It's disgusting, it really is. I'm ashamed because, you know, it's something I done."
Judge Gillian Braddock noted Priemer was a methamphetamine addict and was at a moderate to high risk of re-offending.
"It was not an impulsive type of offence. It was persistent, repeated on a significant number of occasions (and) progressive in its obscenity," she said.
Priemer also appeared briefly in Perth Magistrates Court over an incident on Thursday in which he allegedly brought two rifles and a pipe bomb into Royal Perth Hospital.
Acting Inspector Craig Davis told reporters Priemer visited an associate at the hospital about 9.45am and then went to see his lawyer to go to court.
He returned at 2pm and was arrested after nurses found the weapons among his belongings, which included two suitcases and a backpack.
Three floors were evacuated and roads around the hospital were also cordoned off during the incident.
Act Insp Davis said a preliminary assessment found that the suspicious package was an "improvised explosive device" that was not functional.
Police also visited the Hay Street office of Priemer's lawyer to examine a bumbag that was left there but found it was not a threat.
Priemer has been charged with several offences including aggravated possession of a firearm and possessing explosives under suspicious circumstances, and will return to court on October 16.
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