1990 Strangeways Prison riot April, and 40 prisoners held a prison officer hostage for twenty-four hours after taking over a hall at HM Prison Shotts on 10 April. On 12 April, two teenage remand prisoners at HM Prison Swansea barricaded themselves into their cell for seventeen hours, and on 22 April between 80 and 100 remand prisoners staged an eighteen-hour rooftop protest at HM Prison Ashfield in Pucklechurch. On 2 April newspapers reported a weekend of "anti-authority violence", as in addition to the Strangeways riot the Poll Tax Riot had occurred in London on 31 March. Reports of the violence at Strangeways included kangaroo
2012 Welikada prison riot handcuff the prisoners but they objected and arguments and fighting broke out between the STF commandos and the prisoners. Some prisoners alleged that they had been stripped and beaten up. The prisoners started throwing stones and other objects at the STF. As the disturbance grew the STF tried to suppress the riot using tear gas but at around 4.30 pm prisoners working in the "Bingo" section broke into the main area and also started fighting with STF. The STF and the prison officials had to retreat from the prison. The prisoners took control of the prison and a siege ensued