PESHAWAR A head constable of Special Branch, Javed, was killed when some unknown armed persons attacked him near Budni Bridge, in the area of Faqirabad Police Station on Wednesday. The police sources informed that Javed was on the way to home after finishing his duty, in the meantime armed bike riders attacked him on the back, which resulted killing of Javed son of Namalo on the spot. His body was shifted to the Lady Reading Hospital (LRH) Peshawar for autopsy. Police registered the FIR and started investigation.