A fraction of over 300 students who were recently abducted from a Catholic school by Nigerian militants have escaped to freedom, the Catholic Church and Christian Association of Nigeria announced on Sunday.

Gunmen kidnapped students and teachers from St. Mary’s School in Papiri, Niger state, on Friday, marking the latest episode in a spate of attacks against Christians from radicalized Islamist terrorist groups such as Boko Haram and the Fulani herdsmen. The Trump administration has voiced increasing concern that the violence, which has been ongoing for years, amounts to a “genocide” against Christians.