NABU Officer Detained by SBU in Sumy Amidst Corruption Investigation

Sumy, Ukraine – March 16, 2026 – A detective from Ukraine’s National Anti-Corruption Bureau (NABU) was detained by the Security Service of Ukraine (SBU) at a checkpoint near Sumy, sparking a dispute between the two agencies. The detention has raised concerns about potential interference with an ongoing corruption investigation.

Details of the Detention

According to a statement released by NABU, the officer was detained while performing official duties as part of an active investigation. The SBU cited the reason for the detention as the officer’s parents residing in temporarily occupied territory. Ukrinform and UNN both reported on the incident, confirming NABU’s account.

NABU’s Response and Prior Vetting

NABU has asserted that the detention was unjustifiable and is hindering their ability to document a crime and perform official duties. The bureau emphasized that the officer underwent comprehensive vetting procedures prior to being appointed to NABU, including a polygraph examination conducted by their internal control department. This vetting specifically checked for any potential ties or cooperation with representatives of the aggressor state or collaborationist structures. Liga.net detailed these claims.

SBU Confirmation and Investigation

The SBU has officially confirmed the detention, stating that the officer was flagged with “suspicious signs” requiring further verification. Antikor reported on this confirmation. The SBU has not provided further details regarding the nature of these suspicions.

Broader Context: NABU Investigations

This incident occurs amidst ongoing high-profile investigations by NABU. In November 2025, NABU exposed a criminal group involving officials and businessmen allegedly taking kickbacks from Energoatom’s counterparties and laundering the funds. NABU Director Semen Kryvonos has recently stated that extradition procedures are underway in the “Midas” case, with cooperation from several foreign jurisdictions to gather evidence and return defendants. NABU and the Specialized Anti-Corruption Prosecutor’s Office (SAP) uncovered a group of People’s Deputies allegedly selling votes in the Verkhovna Rada in December.

Looking Ahead

NABU is currently taking steps to clarify the circumstances surrounding the detention of its officer. The outcome of this situation could have significant implications for the cooperation and independence of anti-corruption efforts within Ukraine. Further details are expected as the investigation progresses.