Russian soldiers have been heard raising concerns about how North Korean soldiers will be commanded and provided with ammunition and military kit, leaked intercepts obtained by the Defense Intelligence of Ukraine and released on Friday show.

The Russian soldiers talk disdainfully about the incoming North Korean soldiers, codenamed the “K Battalion,” at one point referring to them as “the f**king Chinese.”

In the same extract, a serviceman describes another who has been tasked to “meet people.”

“And he’s like standing there with his eyes out, like… f**k,” the soldier says. “He came here and says what the f**k to do with them.”

The audio was intercepted from encrypted Russian transmission channels on the night of October 23, according to Ukraine’s Defense Intelligence.

Ukraine’s analysis of the intercepts revealed that North Korean troop movements were planned for the morning of October 24, in the area of Postoyalye Dvory field camp in Russia’s Kursk region, where Ukraine launched a surprise incursion earlier this year.

The intercepts also reveal plans to have one interpreter and three senior officers for every 30 North Korean men, which the Russian soldiers are heard in the audio condemning.

“The only thing I don’t understand is that there [should be] three senior officers for 30 people. Where do we get them? We’ll have to pull them out,” one Russian serviceman says.

“I’m f***ing telling you, there are 77 battalion commanders coming in tomorrow, there are commanders, deputy commanders and so on,” a serviceman says in another extract.

The interepted audio follows a Thursday announcement from Ukraine’s military intelligence service that a group of North Korean soldiers have been spotted in Russia’s Kursk region, an area that borders Ukraine and has seen ongoing military operations.

In a post on its official Telegram account, the Defense Intelligence of Ukraine said some North Korean troops, who had received training in Russia’s far east, have made their way to the western Russian region, where Ukraine has maintained a foothold since launching an incursion in August.

Ukrainian President Volodymyr Zelensky said Friday that he received a report on the deployment of North Korean military personnel from Ukraine’s commander-in-chief.

“According to intelligence, on October 27-28, Russia will deploy its first North Korean troops in combat zones. This is a clear step in Russia’s escalation that matters, unlike all the disinformation circulating in Kazan these days,” Zelensky said, criticizing the BRICS summit staged by Russian President Vladimir Putin this week in the southwestern Russian city of Kazan.

The Kremlin had initially dismissed allegations of North Korean troop deployments, but on Thursday at the BRICS summit, Putin did not deny that Pyongyang had sent soldiers to the country.

“The actual involvement of North Korea in combat should be met not with a blind eye and confused comments, but with tangible pressure on both Moscow and Pyongyang to comply with the UN Charter and to punish escalation,” Zelensky added.