Russia’s Federal Security Service has detained a woman with dual Russian-US citizenship in the Urals mountain city of Yekaterinburg on suspicion of treason for providing “financial assistance” to Ukraine’s armed forces, the TASS news agency reported.

The 33-year-old resident of Los Angeles had been collecting funds for a Ukrainian organization whose ultimate beneficiary was the Ukrainian army, the FSB said, according to TASS.

“The Federal Security Service in Yekaterinburg suppressed the illegal activities of a 33-year-old resident of Los Angeles, who has dual citizenship of Russia and the United States,” TASS quoted the FSB as saying.

TASS did not name the woman.