ISLAMABAD — Five insurgents including a key commander were killed on Sunday in a security forces operation in the Pakistani city of Peshawar, officials said. Security forces launched the operation on a tip-off in a mountainous area in the suburbs of Peshawar, the capital of the northwestern province of Khyber Pakhtunkhwa, bordering Afghanistan. The operation killed five militants belonging to the notorious Jangrez group, a senior security official told The Anadolu Agency on the condition of anonymity. The group is said to be an affiliate of the Tehrik-e-Taliban Pakistan, which is a conglomerate of different insurgent groups in the country. The Tehrik-e-Taliban Pakistan has been locked in a ceasefire with security forces since March 1.