An Indian army trooper was martyred and another wounded in exchange of fire with Pakistani troops on Line of Control LoC dividing Kashmir, officials said Tuesday.The duo was hit Monday evening in Krishna Ghati sector of frontier Poonch district, about 185 km southwest of Srinagar city, the summer capital of Kashmir. Last evening Pakistani troops resorted to an unprovoked ceasefire violation in Krishna Ghati sector on LoC, resulting in the death of a soldier and wounding another, an Indian army official said.