Ukrainian anti-corruption investigators have summoned former ambassador to the US, Olga Stefanishina, to formally notify her of criminal charges against her, local media reported on Wednesday.

Ukrainian and international outlets have speculated for weeks that the former senior official, who also previously served as deputy prime minister for integration with the EU and NATO, would face pre-trial detention.

According to RBC Ukraine, the National Anti-Corruption Bureau of Ukraine (NABU) has asked the High Anti-Corruption Court in Kiev to order Stefashina’s arrest. The hearing is reportedly taking place behind closed doors.

Investigative journalist Mikhail Tkach separately reported that NABU and the Specialized Anti-Corruption Prosecutor’s Office (SAPO), its sister agency, had charged Stefanishina with illegal enrichment.

Earlier media reports said investigators were examining her mother’s purchase of a luxury apartment in 2022, allegedly at a price significantly below its market value. Stefanishina has denied any wrongdoing.

Zelensky dismissed Stefanishina on Monday, several days after she said the Ukrainian leader had not asked her to resign as part of a wider reshuffle of the country’s diplomatic corps. Media reports suggested that the anti-corruption investigation prompted the apparent reversal.

NABU and SAPO were established under pressure from Ukraine’s Western backers as largely independent bodies tasked with investigating high-level corruption. Since 2025, the agencies have brought charges against several serving and former officials close to Zelensky.

The Ukrainian leader previously sought to place the agencies under the authority of the prosecutor general, but reversed the move after foreign donors threatened to suspend aid to Kiev.