Kyiv intelligence agencies clash over Russian plot, leaving three injured

Key points

• Three DIU officers were injured during a standoff with the SSU on Shumskoho Street in Kyiv's Dniprovskyi district on September 2, 2026.
• The SSU stated it was conducting an operation to foil a terrorist attack by Russia's FSB against a Russian opposition leader who had arrived in Ukraine for Independence Day.
• The State Bureau of Investigation (SBI) and the commander of the SSU's Alpha special forces unit arrived at the scene to mediate and ensure both sides unloaded their weapons.
• The incident is linked to the disappearance of Stepan Kaplunov, deputy commander of the Russian Volunteer Corps, who was reported missing from his home on September 1.
• The Prosecutor General’s Office opened a criminal case, stating that armed men attacked SSU officers and blocked their passage with vehicles during the operation.
• Former DIU chief and current Presidential Office head Kyrylo Budanov called for a thorough and impartial investigation into the incident.

Background

This incident follows a pattern of security operations in Kyiv, including a previous foiled assassination attempt in August against a defense industry executive. The Russian Volunteer Corps, a unit of Russian nationals fighting for Ukraine, has been a target of Russian intelligence services, as seen in the abduction of its deputy commander, Stepan Kaplunov. The clash highlights the complex and sometimes contentious relationship between Ukraine's various security and intelligence agencies, which are tasked with counterterrorism and foreign intelligence respectively.

How outlets are covering it

Ukrainska Pravda and Kyiv Post report that the SSU and DIU were engaged in a direct firefight, with three DIU officers injured. The SSU, however, frames the incident as an armed attack by 'a group of individuals' from 'one of the units of the Defense Forces of Ukraine' (attributed to DIU by media) who tried to block their investigative actions. Ukrinform, citing the SSU, presents the event as a successful joint operation by the SSU and DIU to foil a Russian plot, without mentioning the internal conflict or injuries. This discrepancy suggests a significant disagreement between the agencies over the nature of the confrontation and the roles of each party.

Why it matters

The incident exposes deep-seated tensions and jurisdictional conflicts within Ukraine's security apparatus, which could undermine national security efforts. The involvement of a Russian opposition leader and a Russian Volunteer Corps commander highlights the ongoing and dangerous interference by Russian intelligence services (FSB) in Ukrainian affairs. The public dispute between the SSU and DIU, two of the country's most powerful agencies, raises serious questions about internal coordination, accountability, and the rule of law in Ukraine's security sector.

What to watch

The Prosecutor General’s Office and the State Bureau of Investigation (SBI) are expected to lead a thorough investigation into the armed attack and the circumstances of the standoff. The outcome of this probe will be crucial in determining accountability and potentially reshaping the operational protocols and relationships between Ukraine's intelligence agencies. The fate of Stepan Kaplunov and the identity of the targeted Russian opposition leader will also be key developments to watch.