The United States on Friday blacklisted seven people and 16 North Korean companies for ties to the North Korean government or its nuclear and weapons programs, the U.S. Treasury said in a statement.



The measures come after North Korea conducted its fifth and largest nuclear test in September.



Treasury blacklisted several individuals who it said were North Korean officials, including at the Ministry of Atomic Energy
Industry, which oversees the nuclear program, and the Workers' Party of Korea, the ruling party.



The companies sanctioned on Friday include Air Koryo, North Korea's national carrier, and 16 aircraft it has an interest in, as well as six financial services companies, and companies which the U.S. Treasury said trade in North Korean metal, coal and minerals or supply North Korean laborers overseas.U.S. sanctions North Korean companies, officials