As the crisis in Victoria's youth justice system deepens and the Government announces a sweeping review, one expert has blamed a "lazy, inadequate" court system for failing children.

Key points: Last escapee inmates from Malmsbury Youth Justice Facility have been caught

Last escapee inmates from Malmsbury Youth Justice Facility have been caught Former children's commissioner says young people staying on remand for too long

Former children's commissioner says young people staying on remand for too long Says the dual-track system, allowing court discretion to treat young people as adults or juveniles, is important

The last of 15 inmates who escaped from the Malmsbury Youth Justice Facility on Wednesday were caught yesterday afternoon, after the group went on what police have described as a mini-crime wave across the state.

Bernie Geary, who retired in 2015 as Victorian commissioner for children and young people, said it was clear where Victoria's youth justice system had gone wrong.

"I do wish the Government would attend to the real issues, and that is about a lazy inadequate court and justice system that is causing these young people to be on remand for 100 days and more," he said.

"Which causes a great deal of unrest in the youth justice system."

It is not known how many of the teenagers who escaped the Malmsbury Youth Justice Centre on Wednesday afternoon were on remand.

But of young people detained in Victoria, about 80 per cent are on remand, while just 20 per cent are serving a sentence.

"When a young person is on remand they come into a system and they haven't got a date," Mr Geary said.

"And all young people as prisoners do need a date, they need to know what they're working towards.

"These kids haven't got a date and so they are angry and anxious and everything else, mix that with immaturity and lack of support on the outside in many cases — it's a very, very potent recipe."

Duel track system 'jewel in the Victorian crown'

The Government yesterday flagged a drastic overhaul of the system with everything on the table.

It announced they would build a new fit-for-purpose youth detention facility.

And it also said it was considering using guards from adult prisons, anti-riot squads, and even moving Youth Justice from its current portfolio of Children into Corrections.

Mr Geary said that would be a dreadful shame.

"One of the jewels in the crown here in Victoria is that we have what's called a dual-track system," he said.

"Where the judges and the magistrates have a capacity to look at a young person's needs and personality and capacity and sentence them to an adult system or a juvenile system.

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"And it would be a dreadful shame if our dual-track system went down the drain because people weren't able to handle what seems to me to be a logistical problem."

He said despite the current troubles, on the whole Victoria's system remained the best in the country.

"People in the sector are extremely worried that the youth justice system will be tinkered with to the point that the community will be more at risk than it is now," he said.

But he said he accepted the community concern about the current crisis.

"I can understand people being angry and feeling insecure as to the consequence of them [young inmates] being out and angry as they were over the last few days."

While Mr Geary said people had a right to be angry with the Government, he said he would not be joining the State Opposition in calling for the Minister Jenny Mikakos to resign.