This photo provided by the North Korean government shows what it says is a Hwasong-17 intercontinental ballistic missile before its test firing at Pyongyang International Airport in Pyongyang, North Korea, Nov. 18. AP-Yonhap

South Korea announced additional sanctions on North Korea on Friday in response to growing security threats from North Korea, highlighted by its long-range missile launch last month.

Seoul has decided to impose independent sanctions on eight North Korean individuals and seven institutions involved in the secretive regime's nuclear and missile development programs, according to the foreign ministry.

Those added to the blacklist include officials at financial institutions related to the North's nuclear and missile programs, and those involved in illegal ship-to-ship transfers of sanctioned North Korean goods, it said in a press release.