The grieving foster parents of a man found dead in his room at a North Shore inpatient clinic claim they warned staff he was suicidal just hours before the 24-year-old died.

They are demanding answers about what went wrong, while preparing to farewell their son.

The young man is one of two male inpatients at Waitematā DHB's He Puna Waiora mental health unit to have died in suspected suicides within four days this week.

The DHB announced the deaths in a statement and said it had launched an independent external review.

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Peter Willcox and his wife were yesterday starting the

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