A report into a mental health unit on Teesside has found it was under-staffed and young patients were not supported enough.
West Lane Hospital, in Middlesbrough, was closed in August, after Care Quality Commission (CQC) inspectors found it to be 'Inadequate' and two patients died in its care.
The Tees, Esk and Wear Valleys NHS Trust, responsible for running the unit, has said it 'fully accepts the findings' and is "deeply sorry".
The CQC published two inspection reports on the trust's child and adolescent mental health (CAMHS) wards at the hospital over the summer following three visits in August.
These led to the commission imposing conditions on the trust's registration, which stopped anyone else being admitted to West Lane, ultimately leading to its closure.
The trust's CAMHS inpatient service - made up of five units across three sites, West Lane Hospital, West Park Hospital and Roseberry Park - was inspected in June 2018, receiving a rating of 'Good'.
It was examined again in June this year though because of concerns raised about the treatment of young people receiving support, low staffing, a poor culture and a "significant number" of self-harming incidents. It was rated 'Inadequate' overall.
The August 2019 inspections only looked at the care being provided in West Lane Hospital. Both inspections were unrated, meaning the 'Inadequate' stayed in place.
The inspection on August 6 specifically focused on the question of whether the services there were safe, following the death of a patient there. the subsequent reported that staffing, although improved, was not in line with established agreements and agency staff were overly relied on.
The second inspection, on August 20-21, was prompted by whistleblowing information about the care of a person at the service. Inspectors reported being told by staff that they were "struggling" and that the service was "traumatised". Inspectors identified that staff did not complete incident reports consistently to clearly identify that physical restraint was being used, little learning had taken place from reported incidents and again found observation records were poor.
Jenny Wilkes, the CQC's head of mental health inspection, said:
Colin Martin, the trust's chief executive, said: