South Korea's military said two explosions were heard on Friday and it was checking the source of the sounds. The two blasts were heard off Yeonpyeong island near the disputed border in the Yellow Sea, a Joint Chiefs of Staff spokesman told AFP. "We're checking the origin of the sounds," he said. http://www.telegraph.co.uk/news/wor...llery-fire-heard-near-South-Korea-island.html