A Deputy Director of Joint Admissions and Matriculation Board (JAMB), Mr Yisa Usman was arraigned yesterday on allegations bordering on threatening Mrs. Raheemat Oloyede on phone with the intent to blackmail her husband, Prof. Is-haq Oloyede, the board’s registrar. Usman was arraigned by the police on behalf of the Federal Government on a five-count charge before Justice Nkeonye Maha of …