A Ukrainian man suspected of involvement in the 2022 Nord Stream pipeline sabotage has been arrested in Poland, marking a significant development in the ongoing investigation.

The suspect, Wolodymyr Z., was detained in Pruszkow near Warsaw based on a European arrest warrant issued by German authorities, and he denies involvement, planning to fight extradition.

He is a Ukrainian citizen residing in Poland with a family, and his skills as a professional diver are believed to have been used in the underwater attack.

The arrest follows previous investigations that identified a Ukrainian sabotage cell of five men and one woman, linked to underwater operations near Denmark and Sweden, with some suspects connected to a Ukrainian diving school.

German authorities have identified all members of the sabotage team involved in the pipeline attacks, with seven suspects named, and believe the operation was carried out by trained divers using explosives placed by a yacht from Rostock.

The investigation, which began in October 2022, has involved multiple countries including Germany, Sweden, and Denmark, with Germany taking the lead after initial probes were discontinued by Denmark and Sweden.

The sabotage caused significant damage to the pipelines in late 2022, with multiple leaks, and was attributed to professional underwater divers, although no conclusive evidence of state involvement has been established.

While Ukraine has denied involvement, the investigation continues to seek the full details and responsible parties behind the attack, which has heightened geopolitical tensions and energy concerns across Europe.

The suspect's extradition process involves German courts, with Italy having previously ordered the extradition of another Ukrainian suspect, and the process could take several weeks or months.

Polish authorities have been accused of obstructing the investigation, but they confirmed the arrest without providing further details, and Germany's federal prosecutor has not yet commented.

The case remains a complex international effort, with ongoing legal proceedings and investigations aimed at uncovering the full scope of the sabotage and its motives.