BUENOS AIRES, Nov. 17 (Xinhua) -- Argentina's ARA San Juan submarine, which went missing a year ago, has been located, an official said.

The ARA San Juan submarine sank on Nov. 15, 2017, with 44 crew on board, following an unidentified explosion in the vicinity of the ship.

The vessel was detected 800 meters (2,625 feet) deep in waters off the Valdes Peninsula in Argentine Patagonia, the statement said.

The navy said a "positive identification" had been made by a remote-operated submersible from the American ship Ocean Infinity, which was hired for the latest search for the missing vessel.

The discovery was announced just two days after families of the missing sailors held a commemoration one year after the sub disappeared on Nov. 15, 2017.

On Thursday, on the anniversary of the disappearance, President Mauricio Macri said the families of the submariners should not feel alone and delivered an "absolute and non-negotiable commitment" to find "the truth."

Macri promised a full investigation after the submarine was lost. Federal police raided naval bases and other buildings last January as part of the probe, soon after the government dismissed the head of the navy.