German automaker Daimler says it is unsure how North Korea’s controversial leader Kim Jong-Un was able to acquire two of its armored limousines.

According to reports, Kim has been traveling to high profile meetings, including summits with President Donald Trump and Russian President Vladimir Putin, in limousines built by Daimler. Current United Nations sanctions prevent the sale of luxury goods, including limousines, to North Korea. The Asian nation is also sanctioned by the United States, European Union and several other countries and international organizations.

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Representatives from Daimler have maintained that they are unsure of how the vehicles came into Kim’s possession. They said the company has had no dealings with North Korea for more than 15 years and is following all sanctions.