The second batch of North Korean troops will soon be sent to Russia, Bloomberg reports, citing South Korean intelligence documents handed over to the allies.

"A first group of 1,500 elite special forces troops is already undergoing training in Russia’s far east as part of a planned deployment of about 10,000 North Korean soldiers, according to the documents. They were transported to the port of Vladivostok between Oct. 8 and Oct. 13 after the first visit by Russian naval vessels to North Korean waters since 1990, the assessment showed. The documents also laid out details of the scale of arms supplies from North Korea to support Russia’s military operations in its full-scale invasion of Ukraine," the report notes.

Pyongyang has sent approximately 8 million rounds of North Korean-made 122mm and 152mm shells since August last year, the analysis showed. About 100 Hwasong-11 missiles as well as Bulsae-4 anti-tank weapons have also been detected on the battlefield in Ukraine for the first time.

"That’s considerably more than some European estimates of the volume of North Korean arms supplied to Russia, according to a government official with knowledge of the subject, asking not to be identified because the matter isn’t public," the report notes.

South Korea will present some of the intelligence to NATO officials at a North Atlantic Council meeting on Monday, two people with knowledge of the matter said. NATO’s potential responses are limited but could include intensifying support for Ukraine and building up partnerships in the Indo-Pacific region, the people said.

It’s assumed the North Korean troops will be dispatched to the frontlines of Russia’s war in Ukraine once their approximately month-long training at military facilities in Vladivostok, Ussuriysk, Khabarovsk and Blagoveshchensk is completed, according to the South Korean documents. The Kremlin plans to equip the North Koreans with weapons and combat uniforms as well as fake identities to make them appear to be residents of eastern regions of Russia, it said.