The Latest Breaking News from Casuarina Prison

Children locked down at WA's main juvenile detention centre need far greater mental health support, according to the woman appointed to look after the interests of the state's children.

The West Australian premier has condemned a disturbance at Casuarina Prison's youth section in which guards were injured, keys stolen and property damaged.

The longest-serving president of Western Australia's children's court has slammed the state's youth justice system as "broken" and "a basket case", following the recent transfer of teenage boys from Banksia Hill Detention Centre to an adult prison.

Family members of teenage boys relocated to Western Australia's highest security prison fear the move will ensnare them in a cycle of violence, as the national children's commissioner says disadvantaged youth are being blamed for system failures.

The teenagers, formerly detained at Banksia Hill Detention Centre, move to an isolated unit at the maximum-security Casuarina Prison.

WA's Commissioner for Children and Young People and protestors voice their opposition to the transfer of 20 boys from Banksia Hill Juvenile Detention Centre to Casuarina Prison.

A group of 20 young offenders from Banksia Hill detention centre will be relocated to a new youth facility at Casuarina Prison in a move an advocate says is gearing them up for a life in the criminal justice system.