Police in northern Nigeria said on Monday they rescued over 300 young men from an Islamic boarding school where they were chained and sexually abused, the second such operation in a month.
A police team raided the school in Daura in Katsina state after some students escaped from their hostel on Sunday and poured into the streets in protest.
Katsina police chief Sanusi Buba told reporters in Daura that the young men were chained and tortured.
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