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
Apodaca prison riot from several prisons in Tamaulipas from January 2010 to March 2011 due to corruption. On 15 October 2011, in the border city of Matamoros, Tamaulipas, 20 inmates were killed and 12 were severely wounded in a prison brawl. Some sources reveal that the killings were indeed "planned executions." Earlier on 6 August 2010, 14 inmates were also killed in a riot at the federal prison in Matamoros. Moreover, in 1991, the time when Juan García Ábrego was the supreme leader of the Gulf Cartel, the federal prison in Matamoros experienced the massacre of 18 people. In the nearby border city