No sign of the Argentine submarine lost in the South Atlantic since November 15 has been found despite a massive worldwide search effort, while families of the 44 crew members face the increasing likelihood that their loved ones will never return.
Relatives and friends of the 44 crew members are still waiting for news - but hopes have been crushed by a navy announcement that an explosion was recorded near where the submarine vanished.
The missing Argentine submarine San Juan was carrying beyond its allowed capacity, declared the brother of a crew member to local media on Sunday.
The US capsule can sink to a depth of 200 meters (660 feet) and rescue up to 16 trapped submarine sailors at a time in shifts of 20 minutes, experts said.
"I'm here to guarantee you that we will carry on with the search, especially now that we have the support of all the global community".
Families of the crew were meanwhile stuck in an emotional purgatory.
"They are gone but are not 'dead'". It was originally scheduled to arrive Monday at a navy base there.
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The families have said they suspect the more than 30-year-old vessel was not properly maintained, a charge the government denies, and that the navy has been slow in sharing information with them.
'They killed my brother!' a man leaving the base in a auto shouted to reporters.
But according to the naval spokesman, Enrique Balbi, "The submarine doesn't sail if that's not done".
Although Mr Macri said that it was not the time to point fingers at anyone, he promised a probe of the sub's disappearance.
Norwegian offshore supply ship Sophie Siem carrying a U.S. mini-submarine has begun searches for Argentina's missing San Juan submarine at 17:00 GMT, a senior official of the Comodoro Rivadavia port told Sputnik on Sunday.
"No-one goes out to sea knowing that they can lose their life", said Ramon Francisco, who was part of the crew that first brought the sub from Germany to Argentina in 1985.