Finnish police said on Thursday they are investigating whether a foreign ship was involved in the damage of an undersea power cable connecting Finland and Estonia following a sudden outage on Wednesday.

Finnish police intend to transport the Eagle S, a Russia-linked tanker the authorities seized after suspecting it of intentionally damaging a Baltic Sea power cable, to shore. The tanker is to be moved from the Gulf of Finland to an anchorage near the Finnish port of Kilpilahti to facilitate the investigation,

Damage to the power cable in the Baltic Sea is the latest in a spate of murky disruptions to undersea cables that have put European authorities on high alert.