North Korea violated United Nations sanctions to earn nearly $200 million in 2017 from banned commodity exports, according to a confidential report by independent U.N. monitors, which also accused Pyongyang of supplying weapons to Syria and Myanmar.

The report to a U.N. Security Council sanctions committee, seen by Reuters on Friday, said North Korea had shipped coal to ports, including in Russia, China, South Korea, Malaysia and Vietnam, mainly using false paperwork that showed countries such as Russia and China as the coal origin instead of North Korea.

The 15-member council has unanimously boosted sanctions on North Korea since 2006 in a bid to choke funding for Pyongyang's nuclear and ballistic missile programs, banning exports including coal, iron, lead, textiles and seafood, and capping imports of crude oil and refined petroleum products.