In 1867, the Fenians were preparing to launch an armed uprising against British rule in Ireland, but their plans became known to the authorities, and members of the movement's leadership were arrested and convicted. Two succeeded in evading the police and fled to England, but they were arrested in Manchester and held in custody. On 18 September 1867, while they were being transferred from the courthouse to Belle Vue Gaol, the police van in which they were being transported was intercepted and they were freed. Police Sergeant Charles Brett was shot dead during the escape. Five suspected of involvement in the escape were tried for murder and sentenced to death. One was pardoned, and one had his sentence commuted, but the remaining three were hanged at Salford Gaol on the morning of Saturday 23 November 1867.