Finland investigates undersea cable damage

Reference TimelineLast updated APR 15
SUMMARY

Finnish authorities on April 15, 2026, released the cargo vessel Fitburg, suspected of damaging an undersea telecommunications cable, though the investigation remains active with one crew member remanded in custody and three others under travel restrictions. As of April 15, 2026: The Finnish National Bureau of Investigation confirmed on April 2, 2026, that the Fitburg's anchor caused the damage in Estonia's exclusive economic zone. The captain of another vessel, Wan Wenguo of the NewNew Polar Bear, pleaded not guilty on February 11, 2026, to charges related to damaging undersea cables and a gas pipeline in October 2023, with Finnish investigators believing his vessel dragged across the seabed. Finland is also establishing a new maritime surveillance hub to enhance security in response to these incidents.

Timeline

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April 2026 — 2 developments

  1. Finnish authorities have released the cargo vessel Fitburg, suspected of damaging an undersea telecommunications cable, but the investigation remains active.

    Finnish authorities have released the cargo vessel Fitburg, suspected of damaging an undersea telecommunications cable, but the investigation remains active. One crew member has been remanded in custody, and three others are under travel restrictions.

  2. The Finnish National Bureau of Investigation stated that the cargo ship 'Fitburg's' anchor clearly caused the damage to an undersea cable in Estonia's exclusive economic zone.

    The Finnish National Bureau of Investigation stated that the cargo ship 'Fitburg's' anchor clearly caused the damage to an undersea cable in Estonia's exclusive economic zone. The 'Fitburg' was released by Finnish authorities on January 12, 2026, after being detained for investigation into aggravated criminal damage.

February 2026 — 1 developments

  1. The Chinese captain of a Hong Kong-registered cargo ship, Wan Wenguo, has pleaded not guilty to criminal damage charges.

    The Chinese captain of a Hong Kong-registered cargo ship, Wan Wenguo, has pleaded not guilty to criminal damage charges. These charges are related to allegations that his vessel damaged undersea cables and a gas pipeline between Finland and Estonia in October 2023. Finnish investigators believe the container vessel dragged across the seabed.

January 2026 — 8 developments

  1. An investigation into the detained vessel Fitburg has revealed its captain, Andrey Maksymenko, was l…

    An investigation into the detained vessel Fitburg has revealed its captain, Andrey Maksymenko, was linked to at least 14 voyages between Russia and Iran from early 2022 to mid-2023, potentially involving arms shipments. This information emerged from an OSINT investigation.

  2. A court case is underway in Helsinki concerning the oil tanker Eagle S, which the Finnish government has accused of deliberately damaging undersea cables.

    A court case is underway in Helsinki concerning the oil tanker Eagle S, which the Finnish government has accused of deliberately damaging undersea cables.

  3. Finland is establishing a new surveillance center or maritime surveillance hub, potentially with Bal…

    Finland is establishing a new surveillance center or maritime surveillance hub, potentially with Baltic allies, to enhance security in response to recent incidents of damage to undersea infrastructure.

  4. Finnish military intelligence suggests that Russia will likely continue efforts to disrupt undersea …

    Finnish military intelligence suggests that Russia will likely continue efforts to disrupt undersea communications networks in the Baltic Sea, according to a report by Yle on January 22.

  5. A Hong Kong court has summoned 18 witnesses to testify in the case against Captain Wan Wenguo of the…

    A Hong Kong court has summoned 18 witnesses to testify in the case against Captain Wan Wenguo of the container ship NewNew Polar Bear, accused of damaging gas pipelines and submarine telecommunications cables in the Baltic Sea. The trial was postponed to February 11, 2026.

  6. Finnish authorities released the Fitburg vessel after preliminary investigations, though a crew member remains detained.

    Finnish authorities released the Fitburg vessel after preliminary investigations, though a crew member remains detained. New details reveal the suspect ship dragged its anchor for dozens of kilometers, with anchor marks on the seabed confirming its route.

  7. Finnish authorities have seized the cargo of the general cargo vessel Fitburg as part of the ongoing investigation into the damaged undersea telecommunications cables.

    Finnish authorities have seized the cargo of the general cargo vessel Fitburg as part of the ongoing investigation into the damaged undersea telecommunications cables.

  8. Finnish police have arrested two crew members of the cargo ship Fitburg.

    Finnish police have arrested two crew members of the cargo ship Fitburg. Customs inspections also revealed the ship was carrying internationally sanctioned 'structural steel'.

December 2025 — 10 developments

  1. Finnish authorities seized the cargo vessel 'Fitburg' on December 31, 2025, on suspicion of sabotaging undersea telecommunications cables.

    Finnish authorities seized the cargo vessel 'Fitburg' on December 31, 2025, on suspicion of sabotaging undersea telecommunications cables. Investigators found an anchor drag mark extending for miles on the seabed, and 14 crew members were detained. The ship was traveling from St. Petersburg to Israel.

  2. Finnish authorities arrested two individuals on January 2, 2026, in connection with damage to an undersea telecommunications cable.

    Finnish authorities arrested two individuals on January 2, 2026, in connection with damage to an undersea telecommunications cable. The arrests followed the seizure of the cargo vessel Fitburg on December 31, 2025, which was found with its anchor chain lowered after reports of cable damage. Helsinki police have opened an investigation into aggravated criminal damage and interference with telecommunications.

  3. Prosecutors in Helsinki have issued prosecution orders related to the incident involving the damaged subsea cable.

    Prosecutors in Helsinki have issued prosecution orders related to the incident involving the damaged subsea cable.

  4. Estonian and Finnish authorities confirm close cooperation on the investigation, and Elisa reports t…

    Estonian and Finnish authorities confirm close cooperation on the investigation, and Elisa reports that services were rerouted, ensuring connectivity remains intact due to network redundancy.

  5. Finnish President Alexander Stubb states that Finland is prepared for various security challenges an…

    Finnish President Alexander Stubb states that Finland is prepared for various security challenges and responds as necessary, while officials emphasize that it is too early to determine if the act was intentional.

  6. The Helsinki Police Department takes over the lead in the investigation, probing the incident as sus…

    The Helsinki Police Department takes over the lead in the investigation, probing the incident as suspected aggravated criminal damage, attempted aggravated criminal damage, and aggravated interference with telecommunications.

  7. Finnish authorities board and seize the Fitburg in a joint operation, detaining all 14 crew members, who are nationals from Russia, Georgia, Kazakhstan, and Azerbaijan.

    Finnish authorities board and seize the Fitburg in a joint operation, detaining all 14 crew members, who are nationals from Russia, Georgia, Kazakhstan, and Azerbaijan.

  8. A Finnish Border Guard patrol vessel and helicopter locate the St.

    A Finnish Border Guard patrol vessel and helicopter locate the St. Vincent and the Grenadines-flagged cargo vessel Fitburg within Finland's exclusive economic zone, with its anchor chain found lowered into the sea near the damaged cable.

  9. Early morning, Finnish telecommunications provider Elisa detects a fault in its undersea cable between Helsinki and Tallinn, Estonia, and reports it to the Border Guard.

    Early morning, Finnish telecommunications provider Elisa detects a fault in its undersea cable between Helsinki and Tallinn, Estonia, and reports it to the Border Guard. Another cable owned by Swedish provider Arelion is also found damaged.