About 70% of young-offenders in Oberstown had substance misuse problems.
An increasing number of children are being sent to the state's detention centre for very serious offences, including causing death.
They're being detained on longer sentences, according to a new annual report for 2020.
Eoghan Murphy reports:
Last year about 70 per cent of young-offenders in Oberstown in Lusk, Co Dublin, had substance misuse problems.
Former governor of Mountjoy Prison, John Lonergan, says the rise in serious offences is concerning
.

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