Restrictions will begin to take effect on April 3.
South Korea has decided to impose sanctions against two Russian individuals and two legal entities, as well as two ships because of alleged cooperation with the DPRK, the Foreign Ministry said.
Restrictions will affect the ships Lady R and Angara, as well as the companies Intellekt and Sodeistvie. Intellekt head Sergei Kozlov and Sodeistvie head Alexander Panfilov will also fall under Seoul's sanctions.
The restrictions will take effect from April 3.
According to the South Korean Foreign Ministry, the sanctions against the ships were imposed for alleged involvement in the transportation of "military items" between Russia and North Korea, which violates the UN Security Council restrictions against North Korea.
The restrictions were imposed against two organizations and two citizens from Russia for helping to "finance" North Korea's nuclear and missile programs by sending North Korean IT specialists and workers abroad, the agency said.
In late March, South Korea also imposed sanctions against a company from Russia for ties with the DPRK.