A US Army soldier stationed in South Korea has been detained in Russia, the US military says.
The unnamed sergeant is accused of stealing from a woman, reports the BBC's US partner CBS.
The soldier was not on official travel when he was held on 2 May in the city of Vladivostock, in Russia's far east.
US National Security Council spokesman John Kirby told reporters the US is "aware of this case and other matters related to Russia".
At the White House briefing on Monday, Mr Kirby said he could not provide more details.
According to a statement from the US Army, the soldier is facing charges of criminal misconduct.
"The Army notified his family and the US Department of State is providing appropriate consular support to the Soldier in Russia," it said.