The repression of Islam (practised by the country's Cham minority) was extensive. Islamic religious leaders were executed, although some Cham Muslims appear to have been told they could continue devotions in private as long as it did not interfere with work quotas. Nevertheless, Mat Ly, a Cham who served as the deputy minister of agriculture under the People's Republic of Kampuchea, stated that Khmer Rouge troops had perpetrated a number of massacres in Cham villages in the Central and Eastern zones where the residents had refused to give up Islamic customs.