RAWALPINDI, Sept 21 (APP): Chief of Army Staff (COAS) on Monday confirmed death sentence of nine hard core terrorists involved in killings of civilians and persons of Law Enforcement Agencies in Khyber Pakhtunkhwa, sectarian killings at Mustung, suicidal attack on mosque in Nowshera and attack on Maj Gen Sana Ullah and Lieutenant Colonel Tauseef Ahmed.