On May 22, Serbian security forces lined up the approximately 1,000 prisoners in the courtyard and fired on them with snipers, machine guns, and grenades from the prison walls and guard towers, killing at least seventy people. At least another twelve prisoners were killed over the next twenty-four hours as prison guards, special police, and possibly paramilitaries attacked prisoners who were hiding in the prison's destroyed buildings, basements, and sewers. The injured were taken away in trucks, while the remaining prisoners were transported to Lipjan prison, where they were beaten.