Ukraine has opened its own criminal investigation into the 2022 destruction of the Nord Stream gas pipelines, months after Germany charged a Ukrainian over the blasts, Suspilne reported. Prosecutors in Kyiv registered the case on war-crimes grounds and say they will test whether Russia staged the sabotage to discredit Ukraine. Serhii Kuznietsov is due to stand trial in Germany in October.

Kyiv will test a Russian false-flag version

Ukraine's Security Service, under the Prosecutor General's Office, opened proceedings on 9 July under the article on violations of the laws and customs of war. Kuznietsov's Ukrainian lawyer, Mykola Katerynchuk, told Suspilne about the case.

The Prosecutor General's Office confirmed it is supervising a probe into the "possible commission in September 2022, amid the international armed conflict between Russia and Ukraine, by citizens of Ukraine, of actions connected to the undermining" of both pipelines in the Baltic Sea. It said the case was registered after the "independent discovery in the media" that Germany had charged a Ukrainian citizen.

Given Russia's use of hybrid methods, investigators will also examine whether Russians organized the explosions as a "false flag" operation, using Ukrainian citizens or imitating their participation to discredit Ukraine.

The office said it used the laws-and-customs-of-war charge because it matches the qualification chosen by Germany's Federal Prosecutor's Office.

Explore further

Russia laid Nord Stream to bypass Ukraine amid preparations for war. Four years after it exploded, Kyiv says it had nothing to do with blasts

The case against Serhii Kuznietsov

The pipelines exploded on 26 September 2022. On 8 August 2025, Germany's Federal Court of Justice issued an arrest warrant for Kuznietsov, alleging he led a group of six who mined the pipelines and detonated them remotely.

Italian police arrested him on 21 August 2025, and Italy's Supreme Court later confirmed his extradition to Germany. A Polish court, by contrast, refused a German request for another Ukrainian suspect, Volodymyr Zhuravlov.

On 2 July 2026, Germany's Federal Prosecutor's Office published its charges — an attack on civilian objects, causing an explosion, and destroying structures. Kuznietsov denies guilt.