Jammu, July 16 (ANI): Pakistani Rangers on Wednesday resorted to unprovoked firing once again at an outpost along the international border in Samba district of Jammu and Kashmir, killing a jawan. Three other BSF personnel and four civilians were also injured during the firing. The injured soldiers and the civilians were rushed to the nearby hospital in Jammu city. According to reports, BSF troops, guarding the borderline, took positions and effectively retaliated resulting in exchanges which are still going on in the area.