UNITED NATIONS - North Korea violated U.N. 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.

North Korea "is already flouting the most recent resolutions by exploiting global oil supply chains, complicit foreign nationals, offshore company registries and the international banking system," the U.N. monitors wrote in the 213-page report.

The North Korean mission to the United Nations did not immediately respond to a request for comment on the U.N. report.

Russia and China have repeatedly said they are implementing U.N.

sanctions on North Korea.

Syria, Myanmar

The monitors said they had investigated ongoing ballistic missile cooperation between Syria and Myanmar, including more than 40 previously unreported North Korean shipments between 2012 and 2017 to Syria's Scientific Studies and Research Center, which oversees the country's chemical weapons program.

The investigation has shown "further evidence of arms embargo and other violations, including through the transfer of items with utility in ballistic missile and chemical weapons programs," the U.N. monitors wrote.

They also inspected cargo from two North Korea shipments intercepted by unidentified countries en route to Syria. Both contained acid-resistant tiles that could cover an area equal to a large scale industrial project, the monitors reported.

U.S. Ambassador to the United Nations Nikki Haley FILE - U.S. Ambassador to the United Nations Nikki Haley votes among other members of the U.N. Security Council to impose new sanctions on North Korea, at U.N. headquarters in New York, Dec. 22, 2017. FILE - U.S. Ambassador to the United Nations Nikki Haley votes among other members of the U.N. Security Council to impose new sanctions on North Korea, at U.N. headquarters in New York, Dec. 22, 2017.

One country, which was not identified, told the monitors the seized shipments can "be used to build bricks for the interior wall of a chemical factory."

Syria agreed to destroy its chemical weapons in 2013. However, diplomats and weapons inspectors suspect Syria may have secretly maintained or developed a new chemical weapons capability.

The Syrian mission to the United Nations did not immediately respond to a request for comment on the U.N. report.

The U.N. monitors also said one country, which they did not identify, reported it had evidence that Myanmar received ballistic missile systems from North Korea, along with conventional weapons, including multiple rocket launchers and surface-to-air missiles.

Myanmar U.N. Ambassador Hau Do Suan said the Myanmar government "has no ongoing arms relationship, whatsoever, with North Korea" and is abiding by the U.N. Security Council resolutions.

Banned exports, imports

Under a 2016 resolution, the Security Council capped coal exports and required countries to report any imports of North Korean coal to the council sanctions committee. It then banned all exports of coal by North Korea on August 5.

The U.N. monitors investigated 16 coal shipments between January and August 5 to ports in Russia, China, Malaysia and Vietnam. They said Malaysia reported one shipment to the council committee and the remaining 15 shipments violated sanctions.

After the coal ban was imposed on August 5, the U.N. monitors investigated 23 coal shipments to ports in Russia, China, South Korea and Vietnam. The U.N. monitors said all those shipments "would constitute a violation of the resolution, if confirmed."

North Korea "combined deceptive navigation patterns, signals manipulation, transshipments as well as fraudulent documentation to obscure the origin of the coal," the monitors said.

The U.N. monitors "also investigated cases of ship-to-ship

transfers of petroleum products in violation [of U.N. sanctions] ... and found that the network behind these vessels is primarily based in Taiwan province of China."

The monitors said one country, which they did not name, told them North Korea had carried out such transfers off its ports of Wonsan and Nampo and in international waters between the Yellow Sea and East China Sea between October and January.

The report said several multinational oil companies, which were not named, were also being investigated for roles in the supply chain of petroleum products transferred to North Korea.