Ukrainian anti-corruption authorities have searched properties linked to Andriy Yermak, President Volodymyr Zelensky’s chief of staff, as part of a widening probe with potential implications for Ukraine’s political landscape and ongoing peace negotiations.

In a Telegram post, Yermak confirmed that law enforcement officers were granted full access to his apartment, stating that he was cooperating with investigators alongside his legal team.

The National Anti-Corruption Bureau of Ukraine (NABU) and the Specialised Anti-Corruption Prosecutor's Office (SAP) issued a joint statement verifying that the searches were lawfully authorized and related to an ongoing investigation. However, officials did not disclose the specific nature of the inquiry.

Earlier this month, NABU and SAP announced a major investigation into a $100 million kickback scheme involving the state atomic energy firm, Energoatom. The alleged scheme is tied to a former business associate of President Zelensky.

Although Yermak has not been named as a suspect, the incident has fueled calls from opposition lawmakers, and even some within Zelensky’s own political faction, for his removal.

Yermak’s role in Ukraine’s political structure

The Guardian reports that Yermak holds a central position in the Ukrainian administration, whereby he functions as the president’s most trusted advisor, chief political operator, primary liaison with foreign officials, and lead peace negotiator.

Observers describe the relationship between Yermak and Zelensky as highly interdependent, with the chief of staff exerting extraordinary influence over both domestic and international affairs. Figures familiar with Yermak’s work characterize him as tireless and strategic, often acting to eliminate rival power centers, according to The Guardian.

While foreign diplomats have appreciated the direct access Yermak provides to Zelensky, some have reportedly found him difficult to engage with. During the Trump administration, preference was given to working with Rustem Umerov, now Ukraine’s national security council head.

The operation occurs amid heightened pressure from the United States for Ukraine to engage in peace talks with Russia. Any perceived misconduct at senior government levels may undermine Ukraine’s negotiating leverage, also deepening the ongoing wartime political crisis, already considered one of the most severe since the conflict began.

Despite prior calls to diminish Yermak’s influence, President Zelensky has remained publicly supportive of his chief of staff. However, a confirmed corruption scandal could shift the political calculus, potentially forcing a reassessment of Yermak’s role.