Finland seized an oil tanker that authorities believe might have deliberately cut vital undersea cables. Finnish authorities believe the tanker may be linked to Russia.

It’s the latest in a spate of murky disruptions to undersea cables that have put European authorities on high alert and heightened fears of sabotage by Russia.

Finnish authorities seized the Russian oil tanker Eagle S after the country’s police opened a criminal investigation into the vessel’s possible involvement in another cutting of undersea power and communications cables in the Baltic Sea on Christmas Day,