Three personnel from an intelligence agency were killed when armed men ambushed their vehicle in the Matta tehsil of Swat on Monday evening, eye-witnesses told Daily Times. The three men were travelling in a pick-up truck when it came under fire from unidentified armed men in the Sech Band area of Kabal, said a local. Police confirmed the attack and the killing of the three agency personnel. Locals said army troops later surrounded the area, imposed curfew and began a search operation in Sech Band, Ronial and adjacent areas to locate the assailants.