A disturbance involving prisoners at HMP Ranby has ended according to the Ministry of Justice.
The department said in a statement: "The disturbance at HMP Ranby has ended safely. No staff or prisoners injured. Visits tomorrow will take place as normal."
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There has been a surge in the number of attacks reported to be motivated by sexual orientation and transgender identity.
Emergency services were called to the tracks near Bedford Road in Bootle shortly after 7pm on Monday night.
The royal couple arrived in the Commonwealth country on Monday evening.