Pyongyang is accused of sending thousands of containers of munitions to Moscow for its use in the war against Ukraine.
Japan and South Korea have announced separate sanctions packages targeting companies, vessels or individuals allegedly involved in supplying North Korean weapons to Russia for use in Ukraine, in violation of United Nations resolutions.
Fridayâs announcements come just days before the leaders of South Korea, Japan and China meet in Seoul for their first trilateral summit in nearly five years.
Recently, Pyongyang has been accused of sending thousands of containers of munitions to Russia, and experts have said Pyongyangâs recent testing spree may be of weapons destined for use on battlefields in Ukraine.
On Friday, Japanâs top government spokesperson Yoshimasa Hayashi said Tokyo âstrongly condemnsâ the alleged deals.
âWe have cooperated with allies like the United States to freeze the assets of 11 groups and one individual involved in the Russia-North Korea military assistance meant to support Moscowâs invasion of Ukraine,â he told reporters.
âIt violates the UN security resolutions that categorically ban the transfer with North Korea of weapons and related materials.â
Japanâs Asahi newspaper reported that nine of the groups and the individual were in Russia while the other two organisations, based in Cyprus, allegedly helped transport weapons from North Korea.
In August, the US Treasury Department imposed similar sanctions as it said Russia was using up munitions and losing heavy equipment in Ukraine, forcing Moscow to turn to its few allies, including Pyongyang, for support.
Russia has been waging a war against Ukraine since 2014, and it launched a full-scale invasion against its former Soviet satellite state in 2022.
Moscow-Pyongyang ties
Also on Friday, South Korea imposed its own sanctions on two Russian vessels and seven North Koreans for various activities, including allegedly trading military supplies between Moscow and Pyongyang.
The vessels were âcarrying a large quantity of containers between Russia and North Korea transporting military supplies,â Seoulâs foreign ministry said in a statement.
Pyongyang last week denied the allegations that it is shipping weapons to Russia, saying it had âno intention to export our military technical capabilities to any countryâ.
But North Korea recently bolstered ties with Moscow.
North Korea thanked Russia last month for using its UN Security Council veto to block the renewal of a panel of experts that monitored international sanctions on leader Kim Jong Unâs regime.
Seoul said on Friday that one of the newly sanctioned North Koreans was allegedly involved in discussions to facilitate arms deals with a member of Russiaâs Wagner Group from 2022 to 2023.
Another was engaged in bringing diesel â a critical material for Pyongyangâs nuclear and missile development programmes â from Russia into North Korea, it added.
Five additional North Koreans were involved in helping raise funds to support Pyongyangâs nuclear and missile programmes by earning foreign currency as IT workers while residing âillegally in Vladivostokâ.
Last month, Russia described South Koreaâs sanctions on Russian individuals and entities as an âunfriendly moveâ and warned it would respond in due course.