Andrew McRae for RNZ
The Medical Council has apologised to survivors of abuse in the adolescent unit at Lake Alice Hospital in the 1970s.
The council failed to act on complaints made to it in past years about the head of the unit, Dr Selwyn Leeks, and his use of electric shock treatment as punishment.
It has given an apology on Wednesday at the Royal Commission Inquiry into Abuse in Care in Auckland.
Deputy chief executive Aleyna Hall said the council acknowledged the hurt experienced by survivors of Lake Alice.