Police in Finland are transferring the seized oil tanker Eagle S closer to land as they step up their investigation into damage caused to undersea cables this week.

The operation to move the vessel to Svartbeck, an anchorage near the port of Kilpilahti, was scheduled to begin at 10:50 a.m. local time on Saturday, authorities said in a statement. The Helsinki Police Department is taking the lead, supported by Finland’s Border Guard.

Finnish authorities said on Saturday they are moving an impounded tanker closer to port after boarding the vessel carrying Russian oil earlier this week on suspicion it had damaged an undersea power line and four telecoms cables.