A convicted paedophile has been handed extra jail time by a Perth judge for re-offending while on bail.
Darryl James Osborne, a father of three, was in 2012 convicted following a District Court trial of 16 counts of indecently dealing with a child under the age of 13 years and four counts of sexually penetrating a child under 13.
He also pleaded guilty to two charges of indecently recording children under the age of 13 years and two counts of possession of child exploitation material.
The offences occurred between 2008 and 2011 while Osborne was a parent helper at a school attended by two of his sons.
Osborne was initially sentenced to 10 years behind bars but that was reduced by the Court of Appeal to eight years.
He has since pleaded guilty to six sexual offences against boys aged under 13, five of which were committed when he was on bail for the earlier offences.
The court heard Osborne abused a six-year-old school friend of one of his sons while he was visiting the family home.
He also abused two brothers, aged 11 and 12, at a public pool in a small West Australian Wheatbelt town where he was working as a driller in the mining industry.
Osborne, 37, also indecently dealt with another boy at the same pool, and threatened to kill the 10-year-old if he told anyone.
"It goes without saying that each of your victims was harmed by your offending," Judge John Gerard Staude told Osborne during sentencing on Wednesday.
"My understanding of your explanation for the offences which you committed whilst you were on bail is that you were aware that you were going to prison in relation to the offences that you had already committed and you considered you would lose nothing by taking advantage of further opportunities to offend."
Osborne was sentenced to a further two years in jail and will be eligible for parole in May 2020.