Finnish authorities have detained a cargo vessel sailing from Russia under suspicion of damaging an undersea telecommunications cable connecting Helsinki and Estonia across the Gulf of Finland.
The vessel, Fitburg, registered under the flag of St. Vincent and the Grenadines, was en route from St. Petersburg to Haifa, Israel, when Finnish coast guards detected it dragging its anchor near the cable route.
The cable, owned by Finnish telecom operator Elisa, suffered mechanical damage, prompting a temporary communication outage warning.
Elisa confirmed that the incident did not affect service availability, as network traffic was automatically rerouted through alternative infrastructure.
Finnish police boarded the Fitburg as part of a joint operation with the coastguard and border authorities.
All 14 crew members, reportedly of Russian, Georgian, Kazakh, and Azerbaijani nationality, were detained for questioning. Investigators are probing the case as “aggravated criminal damage,” “attempted aggravated criminal damage,” and “aggravated interference with telecommunications.”
Officials suspect the damage could have resulted from the vessel’s anchor scraping the seabed and severing the fiber-optic cable. According to the coastguard, the ship’s anchor showed clear marks of being towed for a considerable distance, consistent with accidental or deliberate dragging.
Concerns Over Hybrid Warfare and Critical Infrastructure
The incident comes amid rising concerns over hybrid warfare tactics in the Baltic Sea region, where several undersea cables have been damaged in recent years.
Hybrid operations often combine cyberattacks, disinformation campaigns, and physical sabotage to target critical infrastructure and destabilize adversaries.
Finnish President Alexander Stubb assured that the nation remains “prepared for security challenges of various kinds” and pledged a firm response.
Police Chief Ilkka Koskimäki stated that authorities would not speculate on whether a foreign state was behind the incident until investigations are complete.
Undersea cables serve as critical communication arteries, transmitting data and internet traffic across Europe. NATO and the EU have both classified such infrastructure as strategically vital, warning that state or non-state actors could exploit vulnerabilities for espionage or disruption.
On the same day, Estonia reported that a second telecom cable linking it to Finland had gone down. Estonian President Alar Karis expressed hope that it was not a deliberate act but confirmed that investigations were ongoing.
The European Commission announced that it is closely monitoring the situation and remains ready to respond to hybrid threats targeting European networks.
Similar suspected sabotage incidents last year involving power and data cables between Finland, Germany, Lithuania, and Sweden underscore the growing vulnerabilities across the Baltic’s undersea network infrastructure.
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