China has declassified its new unmanned underwater drone designed specifically to target “enemy” submarines, a report said on Thursday.

The project to build such a drone dates back to 1990s and its specifics were revealed in an academic paper last week.

The drone was test-fired in Taiwan Strait without human input a decade ago, reported daily South China Morning Post, adding the drone “could detect a mock craft, use artificial intelligence to identify its origin, and hit it with a torpedo.”

The project, the report said, is funded by China’s People’s Liberation Army.

“It is unclear why China has now declassified details of the test, but the tension over the Taiwan Strait has recently escalated to its highest point in decades,” the report noted.

Tensions between China and Western capitals in Taiwan Strait have raised exponentially, mostly under former US President Donald Trump’s administration.

The Western allies have increased their engagements with the island nation of Taiwan which Beijing sees as a provocation.

“These robotic drones are now working mostly individually, but with technological upgrades could patrol in packs,” said Professor Liang Guolong from Harbin Engineering University, China’s top submarine research institute.

Specifics suggest the unmanned drone can patrol “about 10 meters (over 32 feet) below the surface following a predetermined route.”

“The needs of future underwater warfare bring new development opportunities for unmanned platforms,” the researchers said in their paper, published in the Journal of Harbin Engineering University last Friday.

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