Baltic Sea undersea cable damage investigations
Finnish prosecutors charged the captain and bosun of the cargo ship Fitburg with aggravated criminal mischief and interference with telecommunications on June 15, 2026, for allegedly damaging two subsea cables on December 31, 2025, by dragging the ship's anchor approximately 130 kilometers. As of June 15, 2026, the case faces jurisdictional challenges as the damage occurred outside Finnish territorial waters. Finnish police identified four suspects in the investigation, with three under a travel ban, and referred the case to prosecution authorities on June 6, 2026. The investigation into the Fitburg, detained on December 31, 2025, and released on January 12, 2026, is nearing completion, with police expecting to deliver a statement to prosecutors shortly. The Finnish National Bureau of Investigation stated on April 2, 2026, that the 'Fitburg's' anchor clearly caused the damage to an undersea cable in Estonia's exclusive economic zone.
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June 2026 — 2 developments
Finland charges Fitburg captain and bosun over Baltic Sea cable damage
Finnish prosecutors have charged the captain and bosun of the cargo ship Fitburg with aggravated criminal mischief and interference with telecommunications. The charges stem from allegations of dragging the ship's anchor approximately 130 kilometers, damaging two subsea cables on December 31, 2025. The case faces jurisdictional challenges as the damage occurred outside Finnish territorial waters.
Finnish Police Identify Four Suspects in Undersea Cable Damage Probe
Finnish police have identified four suspects in the investigation into the damage of two undersea telecommunication cables in the Gulf of Finland, with three of them currently under a travel ban. The case, which focused on suspected aggravated criminal damage and interference with telecommunications, has been referred to prosecution authorities.
May 2026 — 1 developments
Baltic Sea undersea cable damage investigation nears completion in Finland
The investigation into the cargo vessel Fitburg, suspected of damaging undersea telecommunications cables, is nearing completion. Finnish police expect to deliver a statement to prosecutors shortly regarding the findings. The vessel was detained on December 31, 2025.
April 2026 — 2 developments
Finnish Authorities Release Fitburg Vessel, Investigation into Cable Damage Continues
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.
Finnish Bureau of Investigation: 'Fitburg' Anchor Damaged Undersea Cable
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
Chinese Captain Pleads Not Guilty to Undersea Cable Damage
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
Fitburg Captain Linked to 14 Russia-Iran Voyages, Possible Arms Shipments
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.
Finnish government accuses oil tanker Eagle S of damaging undersea cables in Helsinki court case
A court case is underway in Helsinki concerning the oil tanker Eagle S, which the Finnish government has accused of deliberately damaging undersea cables.
Finland establishes new maritime surveillance center to enhance security
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.
Finnish Military Intelligence: Russia Likely to Continue Baltic Sea Undersea Network Disruption
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.
Hong Kong court summons 18 witnesses in NewNew Polar Bear captain's pipeline damage trial
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.
Finnish authorities release Fitburg vessel; crew member detained as ship dragged anchor
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.
Finnish Authorities Seize Cargo of Fitburg Vessel in Cable Damage Investigation
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 police arrest two Fitburg crew members over sanctioned steel cargo
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
Finnish Authorities Seize 'Fitburg' Cargo Vessel, Detain 14 Crew Over Suspected Cable Sabotage
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.
Finnish Authorities Arrest Two for Undersea Cable Damage After Seizing Cargo Vessel
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.
Helsinki Prosecutors Issue Prosecution Orders for Damaged Subsea Cable Incident
Prosecutors in Helsinki have issued prosecution orders related to the incident involving the damaged subsea cable.
Estonian and Finnish Authorities Cooperate on Investigation, Elisa Reroutes Services
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.
Finnish President Stubb states Finland prepared for security challenges
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.
Helsinki Police investigate suspected aggravated criminal damage and telecommunications interference
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.
Finnish Authorities Seize Fitburg, Detain 14 Crew Members in Joint Operation
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 Border Guard locates cargo vessel Fitburg with lowered anchor near damaged cable
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.
Elisa detects fault in undersea cable between Helsinki and Tallinn
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.
Cargo vessel Fitburg departs St. Petersburg, Russia, en route to Haifa, Israel
The cargo vessel Fitburg departs St. Petersburg, Russia, en route to Haifa, Israel.
August 2025 — 1 developments
Finland charges oil tanker crew over Baltic Sea cable damage
Finnish authorities have formally charged senior crew members of the Eagle S oil tanker in connection with the damage to subsea cables between Finland and Estonia in late 2024. The Estlink 2 power cable was believed to have been damaged by the tanker's anchor. The investigation was nearing completion in May 2025, with repairs expected by mid-July.