(Compass) – Andrew Akume, a Christian lecturer at Ahmadu Bello University (ABU) in Zaria city, Kaduna state, northern Nigeria , has disappeared since the issuance of a death sentence against him. A militant Muslim group at ABU passed the sentence on him claiming he blasphemed Mohammed, the prophet of Islam. Akume asked a Muslim female student not to wear the hijab (head-to-toe covering) because it didnt conform to the Council for Legal Educations dress code for law students. Meanwhile in Kano state, Christians are being held to Islamic law in the way they dress. On May 16, Governor Malam Ibrahim Shekarau ordered all Christians in the state to dress in accordance with Islamic tenets. The order was sent to Christian churches and institutions in the state and implemented immediately in schools. The Rt. Rev. Zakka Nyam, the Anglican Bishop of Kano , has accused the state government of persecuting Christians.