Report: Lockdowns a factor in Banksia Hill detention centre riot The riot at WA's Banksia Hill juvenile detention centre was "entirely predictable" a report says. A RIOT at Western Australia's only juvenile detention centre was inevitable and largely sparked by staff shortage-related lockdowns, the state's prisons inspector has concluded. In a report tabled in parliament today, Inspector of Custodial Services Neil Morgan said there were clear risks associated with cramming in young offenders from the Rangeview juvenile remand centre at Banksia Hill late last year. Those risks were writ large on January 20, when the teen detainees went on a rampage, trashing 108 of 240 cells and incurring about $400,000 damage. Mr Morgan described the conditions proceeding the riot as a "tinderbox" of stress factors including crowded and strained infrastructure, the lack of a normal, busy routine for inmates, a facility in transition, and poor management and leadership. He concluded the Department of Corrective Services placed insufficient weight on security risks at Banksia Hill, allowing Rangeview prisoners to be moved there despite it being considered ``at crisis point" and at risk of a major incident, Mr Morgan said.pe``A major security incident was entirely predictable," he said. Idle, bored children will invariably become frustrated and are very likely to act out their frustrations. Bars and grilles will not stop this, and it is essential that Banksia Hill returns to providing a full and active regime including rehabilitative programs and recreation. His report showed youth custodial officers believed the top two causes of the riot were staff shortages and lockdowns. The Department of Corrective Services' acting commissioner Heather Harker acknowledged staff shortages had contributed to the incident. The guards' union said tensions had been mounting for at least 18 months. It said it had raised concerns with various Corrective Services ministers in recent years, but the warnings went unheeded. And the state government was now asking the department - along with other government agencies - to cut costs. "What is actually needed is more funding and resources," Community and Public Sector Union branch secretary Toni Walkington said. After the riot, the young offenders were moved to the nearby Hakea Prison for adults, where a handful of them trashed their cells on two occasions. The union wants all security concerns to be addressed before inmates are moved back to Banksia Hill by August 26, which the department said it would ensure "in as far as possible." In a separate report today, Auditor General Colin Murphy warned Banksia Hill would be at or close to capacity when the teens returned, reducing the department's ability to cope with any further population increases or serious incidents. Some planned new buildings at the juvenile facility were yet to be delivered under a $30 million redevelopment project, while those that had been constructed were finished 12 months late, Mr Murphy said. Corrective Services Minister Joe Francis said the inspector's findings were consistent with concerns he was already aware of. Mr Francis said he would consider and respond to all of Mr Morgan's 35 recommendations.