The activities of this organisation were briefly interrupted due to the outbreak of World War II, during which Singapore was occupied by the Imperial Japanese Army. They discouraged organisations from operating because they feared they would be influential in opposing against the Imperial Japanese Army administration at that time. After World War II ended during 1945, the Imperial Japanese Army left Singapore and thus was overtaken by the British colonialists in 1946, the organisation was re-established and continued its activities that was interrupted. This time, the organisation is opening its doors to all Muslims throughout Singapore to join in as members.