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Sweden and Finland Investigate Suspected Sabotage of Baltic Sea Telecom Cable

Authorities are probing damage to the C-Lion1 cable, the latest in a series of undersea infrastructure disruptions in the region.

FILE - Crew members aboard a French Navy Atlantique 2 surveillance plane patrolling over the Baltic Sea to protect undersea cables and pipelines from sabotage, on Jan. 23, 2025. (AP Photo/John Leicester, File)
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Sweden's Prime Minister Ulf Kristersson, shown in the capital Stockholm, on February 19, said he is being briefed on an investigation into a possible breach of an undersea cable in the Baltic Sea.
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Overview

  • Swedish and Finnish officials are investigating suspected sabotage of the C-Lion1 fibre-optic cable linking Finland and Germany, which was recently found damaged in Sweden's economic zone.
  • The C-Lion1 cable has been damaged three times in recent months, with incidents in November and December 2024, though data traffic remains unaffected.
  • Swedish Prime Minister Ulf Kristersson emphasized the seriousness of the situation, linking it to broader security concerns in the Baltic Sea region following Russia's invasion of Ukraine in 2022.
  • The European Commission announced plans to allocate nearly €1 billion to enhance undersea cable surveillance and establish emergency repair capabilities across the EU.
  • NATO has increased its presence in the Baltic Sea, launching a patrol mission in January 2025 to safeguard critical underwater infrastructure amid heightened regional tensions.