There are reports that children are forced to work cultivating rice in Mali, particularly along the Niger River and in the Segou region. According to a university study and the ILO, some children are trafficked in groups of 25 to 50, and an estimated 2,000 children have been forced to work in rice fields in Mali. Some children are known to be recruited from villages in other parts of Mali to cultivate rice in Niono. Boys are also trafficked from Burkina Faso to produce rice in Mali. Some boys ages 10-15 from Burkina Faso and Mali are sent to work in rice fields by their Koranic teachers at religious schools. Organized trafficking rings link the farmers with the teachers and the children. These boys receive no pay for their work; the farmers pay the teachers and the recruiters for the boys' labor.