Detectives investigating allegations of historical sexual and physical abuse on inmates at County Durham Young Offenders' Centre have begun interviewing former staff.
The alleged abuse took place between the 1960s and when the centre closed in 1988.
Since August last year, 915 former inmates have contacted police to report they were the victims of physical or sexual assaults.
Up to 70 detectives have been involved in the investigation into alleged physical and sexual abuse at a former detention centre in County Durham, police have confirmed.
Det Supt Paul Goundry, who is leading Durham Constabulary's Operation Seabrook, said there was "still a huge amount of work which has to be done" in the investigation.
He confirmed his team had been in "close contact" with the Crown Prosecution Service, who will ultimately decide if there are grounds to charge individuals with criminal offences.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.