Police and media reports say that Finnish authorities have detained a Russia-linked ship as they investigate whether it damaged a Baltic Sea power cable and several data cables.

The Estlink-2 power went down just after noon on Wednesday. There has been concern about undersea cables in the wake of damage to two data cables in November and Nord Stream gas pipeline.

Estlink 2 power interconnector remained offline following the outage that began at midday local time on Christmas Day.

The Chinese vessel linked to last month’s data-cable breakages in the Baltic Sea has set sail after investigations on board and is heading out of the Danish straits.

Finnish police are investigating whether a Russian ship was involved in the sabotage of an electricity cable running between Finland and Estonia. The authorities said on Thursday that they believe the anchor of the Eagle S,

Finnish authorities are investigating an oil tanker that is part of Russia’s shadow fleet over whether it cut an electricity cable between Finland and Estonia. The Eagle S was stopped by Finnish authorities after the Estlink 2 subsea electricity cable in the Gulf of Finland was disconnected on Wednesday.