Amateur ballerina Ksenia Karelina, a dual American-Russian citizen, was arrested and detained by Russia’s Federal Security Service (FSB) on 28 January in her hometown of Yekaterinburg, where she was visiting family.  After Russian authorities accessed Karelina’s phone and discovered that she had donated about $50 to Razom, a pro-Ukrainian charity, in 2022, the Sverdlovsk regional court sentenced her on 8 August to 12 years in prison for treason.
Her conviction came two weeks after Russia and the West carried out the largest prisoner swap since the Cold War, where 24 people were released. 

Sources: CNN, The Guardian