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Moscow (CNN) - At least one person died after Russia's only aircraft carrier, Admiral Kuznetsov, caught fire Thursday morning during repair work at the Russian port of Murmansk, in the Arctic, according to news agencies Russian state
Another 10 people were injured and two are missing, Russian state news agency TASS reported.
The fire broke out while welders participate in maintenance work on the first power unit. A thick column of black smoke was seen coming out of the upper deck.
The area affected by smoke and fire covered 120 square meters, TASS said.
Admiral Kuznetsov is the largest warship in the Russian Navy and its only aircraft carrier.
The warship made its first combat deployment in 2016, in the Mediterranean Sea, when its fighter jets launched attacks in Syria.
But the aircraft carrier has presented problems since its return to Russia for maintenance.
Last October, a crane fell on the ship during repair work, opening a hole in the deck.
The accident took place after a power interruption that caused the bombs in the floating dock, which was holding the aircraft carrier, to break down and the structure to sink.
The facility, known as PD-50, was one of the largest floating dry docks in the world and the largest in Russia, with 330 meters long and weighing more than 80,000 tons.
After the interruption, the PD-50 quickly submerged, causing two cranes to fall on the deck of the Russian ship, leaving a 4 by 5 meter hole, state media Sputnik said.
After that accident, Russian authorities told state media that the damage would not delay repairs in Admiral Kuznetsov, which were due to be completed by 2021.
The Kuznetsov accident is at least the second deadly fire of the Russian Navy this year.
In July, a fire aboard a Russian deepwater submersible killed 14 crew members. The divers died by smoke inhalation after the ship caught fire, which was conducting investigations in Russian territorial waters, according to TASS.
Russia then said the details of that accident were a "state secret" and gave no further information.
Aircraft carrier