Ten workers have been arrested over a purported abuse of patients with training problems during a dilettante hospital.
Seven group and 3 women were arrested during addresses in Barnard Castle, Bishop Auckland, Darlington and Stockton.
Undercover filming by BBC Panorama during Whorlton Hall in County Durham seemed to uncover patients being mocked, intimidated and restrained.
The site had during slightest 100 visits by central agencies in a year before a abuse was discovered.
Those arrested were being questioned about offences relating to abuse and slight during a privately-run NHS-funded unit, Durham Police said.
A orator pronounced investigations were approaching to take some time though steady a force’s “immediate priority has been to work with other agencies to guarantee a victims during a centre of a allegations and their families”.
Those arrested would be expelled underneath review tentative serve inquiries, he added.
The force pronounced it was seeking a co-operation of a Panorama group to accumulate serve evidence.
Cygnet, a organisation that runs a 17-bed sanatorium section for adults with training problems and autism, pronounced it was “shocked and deeply saddened” by a allegations.
The association usually took over a using of a centre during a spin of a year and pronounced it was “co-operating fully” with a military investigation.
All a patients have been eliminated to other services and a sanatorium sealed down, Cygnet said.
Care apportion Caroline Dinenage told a House of Commons this week she was “deeply contemptible that this has happened”.