Fresh questions this morning have come about how deep the problems run at Oranga Tamariki - and how long they've been going on for.

The agency has stood down four staff for allowing an MMA-style fight between two young men and has also been dealing with another similar incident in a similar way.

Its also dealing with incidents of youths escaping onto the roofs of youth justice facilities, and has stood down two staff over sexual misconduct allegations.

Senior Cabinet Minister Grant Robertson told Tim Dower the issues aren't new, but a rapid review by independent chief executive Mike Bush should be flushed out.

National's Police Spokesman Mark Mitchell insists the facilities were run better when National was in charge.

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