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... When agents questioned him, Praliev said "he was a citizen and national of Kazakhstan," according to a criminal complaint against him.

Praliev was carrying a Russian passport, a passport from Kazakhstan, $4,000 and 60,000 pesos.

In his backpack, agents discovered a drone.

Praliev said he'd worked for the Wagner Group, a paramilitary organization affiliated with the Russian government.

"Wagner has played a key role in Russia's war in Ukraine and operates in multiple countries, particularly across Africa," according to a report published by the Congressional Research Service.

The U.S. Treasury Department considers the Wagner Group a criminal organization. ...