Complex sentence: On September 15, wreckage of a suspected North Korean drone was found by a fisherman in the waters near Baengnyeongdo, the drone was reported to be similar to one of the North Korean drones which had crashed in March 2014.
Split into simpler sentences: On September 15, wreckage of a suspected North Korean drone was found by a fisherman in the waters near Baengnyeongdo. The drone was reported to be similar to one of the North Korean drones which had crashed in March 2014.