A spokesman for Staffordshire Police said the force was aware of the incident at the privately-run jail and was offering support and assistance to G4S.
More top news
French courts have forbidden two sets of parents from naming their two, unrelated, daughters Nutella and Strawberry.
A video has been posted online by students at Nottingham Trent University showing an alleged intruder stuck in a window of a building.
As the Greek Prime Minister is sworn in, we take a look at the main planks of his party's economic plan for the country.