Hope for the 53 crew members of an Indonesian submarine missing in the Bali sea dwindled on Saturday (April 24), as search teams recovered debris believed to be from the submarine.
And their oxygen supply was expected to run out in the early hours on Saturday.
Indonesian Navy Chief of Staff Yudo Margono said a scan had detected the 44-year-old vessel over 2,700 feet undersea.
But the exact location of the KRI Nangala-402 is still unknown.
The submarine lost contact on Wednesday (April 21) as it prepared to conduct a torpedo drill.
Rescuers have sent more than a dozen search helicopters and ships to the area where contact was lost.
The United States, Australia, Singapore, Malaysia, and India provided assistance.
According to Yudo, the submarine had enough air only to last until around dawn on Saturday if it had lost power, but that this could be stretched for five days if the vessel had retained electricity.
But experts say this assessment was optimistic because it assumed the submarine had not been crushed by water pressure.
Indonesia's navy has said it is investigating whether the submarine lost power during a dive.
It also said the vessel could not carry out emergency procedures because it descended to a depth well beyond its survivable limits.