Missing Indonesian submarine: rescuers find unidentified object as US joins search

Race to find missing navy vessel as authorities warn oxygen in KRI Nanggala-402 will run out within 24 hours

Indonesia's president has ordered an all-out effort to find a missing submarine in a race against time to save the 53 crew, whose oxygen supply was only expected to last another 24 hours.

As the US military said on Thursday that it was joining the search, the Indonesian navy said its ships had found an unidentified object at a depth of 50-100 metres (165-330ft).