HELSINKI, Oct. 10 (Euronews) – Engineers first noticed a drop in pressure in the early hours of Sunday morning and decided to cut off the flow of gas.

A gas pipeline in the Baltic Sea that was shut due to an apparent leak, was likely "caused by external activity," Finland's president said in a statement Tuesday.

The Baltic Connector pipeline, which supplies Finland with gas from Estonia, and also carries telecoms links, was closed on Sunday after a leak was discovered.

"It is likely that the damage caused to the gas pipeline and the telecommunications cable is the result of external activity", said President Sauli Niinistö, stressing that the cause of the leak was not yet clear and that investigations were continuing between authorities in Helsinki and Tallinn.

“What specifically caused the damage is not yet known. The investigation will continue." 

NATO Secretary General Jens Stoltenberg wrote on X, formerly Twitter, that he had spoken with Niinistö about the damage to the Baltic Connector and is sharing information with its allies.

Photo from AP