South Korea has imposed new sanctions of its own against four individuals and five entities of North Korea over a recent series of ballistic missile launches.

The South Korean government announced the sanctions on Monday just after the North fired off two short-range ballistic missiles.

Pyongyang also launched its Hwasong-15 intercontinental ballistic missile toward the Sea of Japan on Saturday.

South Korea says the four individuals were involved in evading the UN Security Council sanctions against the North. It says the five entities include trading and shipping firms linked to North Korea's nuclear and missile development programs through coal exports.

Seoul says the sanctions were imposed in the shortest time after North Korea's provocations. It says it will continue efforts to cut off funds flowing into the North.

The latest sanctions against the North are the fourth imposed independently under the administration of President Yoon Suk-yeol.

Earlier on February 10, Seoul announced its own sanctions on North Korean individuals and organizations said to be involved in cyberattacks.