1990 Strangeways Prison riot administrative offices on the lower floor and the chapel on the upper floor. Remand prisoners were held in wings G, H, I and K of a separate prison, linked to the main prison through workshops and a kitchen. The Certified Normal Accommodation Figure for Strangeways, the number of prisoners the prison was designed to hold, was 970. The population of the prison had increased in the months before the riot, from 1,417 in January 1990 to a peak of 1,658 on 27 March. On 1 April, the prison contained 1,647 prisoners – about 925 convicted adult prisoners, 500 remand prisoners
Michigan State Prison rest of the convicts were eventually caught. On September 1, 1912, a riot that is described by many as the worst riot in the prison's history began. The first sign of trouble was when inmates starting throwing plates against the walls of the dining halls. Many fights followed after this and the riot lasted for six days. On the sixth day, the 90 or so inmates that were leading the riot were beaten and the riot eventually came to an end, but not until after the governor had called in the National Guard. Despite additions to the old prison, it