An independent review of Auckland's He Puna Waiora mental health inpatient unit will be carried out after the deaths of two patients this week.
Acting director of Waitematā DHB's Mental Health Services Kevin Cleary said the DHB extended its deepest sympathies to the families of the patients.
"These families have entrusted their loved ones to our care and it is important that they have answers about any factors contributing to their deaths," Cleary said.
"We believe tragic events like this should never happen in an inpatient unit and we have quickly moved to commission this external review," he said in a statement.
The review would focus on how He Puna Waiora was functioning clinically, its governance and any issues relating to the facility itself.