Srinagar, May 17 -- Ahead of the 5th phase of Lok Sabha polls, the troops on Thursday foiled an infiltration bid in Kupwara district of Jammu and Kashmir. The bid was foiled in the Tangdhar sector of Kupwara last night when the Army deployed along the Line of Control (LOC) noticed the suspected movement of infiltrators, a security official said. He said the infiltrators were challenged, and they opened fire, which was retaliated. "The exchange of the gunfire between the two sides continued for few hours," sources said. The army has launched a massive search operation in the area. "No bodies have been found so far in the area," sources said. The infiltration bid was foiled in Kupwara district at a time when the election campaign for the Ba...