An Abuse in Care Royal Commission inquiry into the Anglican Church is now calling for any survivors of abuse at Gloriavale.
The commission's faith investigation will now include the Methodist, Presbyterian and Salvation Army faiths.
It is also seeking evidence from survivors of abuse in three closed community faiths: Gloriavale, Exclusive Brethren (recently known as Plymouth Brethren Christian Church) and Jehovah's Witnesses.
"The scope is being formally extended to recognise increased numbers of survivors from these faiths and their institutions – including schools and care homes – who have disclosed abuse to the Royal Commission."
The commission is asking survivors to come forward and the investigation is covering the period from 1950 to 1999.