Officials say the Russian vessel was not in Philippine territorial waters during its maritime exercise with the Malaysian navy.

The Russian attack submarine was spotted passing through the Philippines' exclusive economic zone (EEZ) after it completed its military exercises with the Malaysian Navy in the Malaysian coastal city of Kota Kinabalu,

MANILA: In a rare sighting, a Russian attack submarine surfaced in the West Philippine Sea (South China Sea) last week, multiple security sources told the Inquirer.