An incident in which three prisoners made their way on to a roof at a privately-run jail has ended.
Security firm G4S said the incident involving three male inmates at HMP Oakwood, near Wolverhampton, had been "successfully resolved" without any injuries.
G4S said it had alerted the Ministry of Justice and enacted its normal contingency plans, but would not discuss how the prisoners gained access to the roof.
The incident comes after the publication on Tuesday of a surprise inspection by Her Majesty's Inspectorate of Prisons (HMIP), carried out in June, which listed a host of safety and operational concerns including the fact "too many prisoners felt unsafe", while describing prisoner-staff relations as inadequate.
In July, the Ministry of Justice mentioned Oakwood as one of only three in the country which it listed as being "of serious concern". Oakwood is a category C training jail for male prisoners sentenced to three months or more, and opened in April last year.
Staffordshire Police said it had not received any calls from the jail.