The net is tightening around the people who blew up the Nord Stream pipelines. German authorities just secured the arrest of a second Ukrainian national in Croatia, bringing a messy geopolitical puzzle one step closer to a courtroom.
If you thought the underwater explosions in September 2022 were going to remain an unsolved mystery forever, think again. Investigators are piecing together a very specific, low-tech sabotage operation that punched massive holes through billions of dollars worth of energy infrastructure.
Let's look at what actually happened, who is in custody, and why this investigation is suddenly moving fast.
The Arrest in Pula
Croatian police picked up a trained scuba diver identified as Vladimir Z. in the coastal city of Pula. He was nabbed on a European arrest warrant issued by Germany.
Federal prosecutors in Germany don't hand out warrants like candy. They allege that Vladimir Z. was part of an active team that planted explosive charges directly onto the Nord Stream 1 and Nord Stream 2 pipelines near the Danish island of Bornholm.
He isn't the first domino to fall. Back in late 2025, Italian police detained another primary suspect—a former Ukrainian soldier named Serhii K.—who was subsequently extradited to Germany. His trial is slated to start in Hamburg. Investigators claim Serhii K. commanded the cell, while Vladimir Z. handled the dirty work underwater.
How a Rented Yacht Pulled Off Multi-Billion-Dollar Sabotage
Forget high-tech military submarines or mysterious state-backed black ops fleets for a second. The reality of the Nord Stream attack sounds more like a gritty spy thriller written by someone on a budget.
According to German case files, the saboteurs didn't use an aircraft carrier. They used a humble sailing yacht named the Andromeda.
The cell rented the vessel out of the German port of Rostock. They used forged identity documents to pull it off. From there, the team—consisting of a captain, a medic, assistants, and trained divers—sailed out into the Baltic Sea. The divers descended into the cold depths to attach explosives directly to the steel pipes.
When the charges detonated in late September 2022, they ruptured three of the four lines, effectively ending an era of cheap Russian gas piped directly into Western Europe.
Official Denials Meet Hard Evidence
Official reactions have been predictably tense since day one. Kyiv has consistently denied any state involvement in the blasts. Moscow pointed fingers everywhere, blaming the US, Poland, and Ukraine while accusing the West of geopolitical theater.
Yet, German prosecutors are treating this as a criminal case rather than a direct act of declared military war. They've charged suspects with causing explosions, anti-constitutional sabotage, and destroying critical infrastructure.
The big question now revolves around command and control. Investigative reports have floated theories that rogue factions or high-ranking military officials operated outside the direct knowledge of top political leadership in Ukraine. Regardless of who signed off on the mission, individual operatives are now facing extradition, prison time, and high-stakes trials on German soil.
Expect more friction as Vladimir Z. fights his extradition from Croatia. If he ends up in a German holding cell alongside Serhii K., prosecutors will finally have the core of the diving team in one room. The full story of who ordered the deep-sea blasts is about to spill out in open court.
