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.
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Officials say wanted Moroccan man Younes Abouyaaquoub was the driver of the van which ploughed into pedestrians in Barcelona last week.
Big Ben will fall silent on Monday for renovations following a backlash from MPs over the proposed four-year timetable for the work.
Rain will push into the northwest, turning heavy and persistent in places