Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Deadly Arctic Submarine Blaze Casts Light on Russia's Underwater Intel Service Jamie Dettmer The blaze on board a nuclear-powered Russian deep-diving submersible that killed 14 elite crewmen last week has cast some light on Russia's top secret underwater intelligence service as well as its growing focus on the resource-rich polar region. The Russian navy officers who died in the fire July 2 while the super-secret submarine was in the Arctic Ocean were buried Saturday in St. Petersburg. Authorities still have not disclosed what triggered the blaze on the Losharik, an AS-12 nuclear-powered spy submarine, and the pride of Russia's deepwater intelligence gathering program. The 60- to 70-meter long vessel was launched in 2003 with the capacity to dive 6,000 meters. This particular sub was in Russian territorial waters when the fire started. Norwegian fishermen told local media they saw the vessel surface abruptly near Ura Bay, about 100 kilometers east of the Norwegian border -- along with men rushing around the deck, but did not spot any smoke. Russia's TASS news agency reported that crew members died because they inhaled toxic fumes. .