LOWER DIR: Five security officials including two officers were martyred in a clash between security forces and militants in tehsil Char Bagh of Swat.According to official sources, five security men including two officers were martyred in a clash in Mangaltan area of tehsil Charbagh.On the other hand, forces shelled militants hideouts in Shah Derai, Totano Bandai and Paharai areas in tehsil Kabal of Swat and Manglore.