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
Topo Chico prison riot Reyes Hernandez, was later charged with murder. A state prosecutor charged prison director Gregoria Salazar Robles and superintendent Jesus Fernando Dominguez Jaramillo for not maintaining the necessary security measures inside the prison. Investigators determined inmates had bats and metal bars that were used in the riot. Some cells did not have locks and inmates were out and about at times they should not have been. After the riot, authorities seized various kinds of contraband items, such as half a kilogram of marijuana, cocaine and other drugs, televisions, and USB memory sticks. Also dismantled were 'luxury cells'. Zetas leader Jorge Iván