Finnish authorities say they have charged the captain and two senior officers of a Russia-linked vessel that damaged undersea cables last year between Finland and Estonia.

Finland filed criminal charges against the top officers of a Baltic oil tanker Monday in connection with severe damage done to undersea cables in December, one of a string of energy and telecom ruptures in the region that many European officials suspected were part of a sabotage campaign directed by Moscow.

On Monday, Finland’s National Prosecution Authority said in a statement that the ship’s captain, as well as the first and second officers, had been charged with “aggravated criminal mischief and aggravated interference with communications” in relation to the episode.