The underwater search for Malaysia Airlines Flight MH370 found man-made objects on the ocean floor, later revealed to be debris from a nearby shipwreck. The Australian Transport Safety Bureau (ATSB), which is leading the search for the missing plane, said in its operational update Wednesday that sonar from Dong Hai Jiu 101 found the debris. The man-made object turned out to be a metal box likely a part of an ancient shipwreck previously detected during the underwater search. Another site of interest inspected by the Remotely Operated Vehicle (ROV) on board the Chinese vessel Dong Hai Jiu 101 revealed only a rock formation. "Dong Hai Jiu 101 has conducted a total of 13 ROV dives during the swing. Two dives were completed by Dong Hai Jiu 101 in the past week with one sonar contact identified as geology," ATSB said in the statement.