Norwegian police have named the captain of a Tsakos Energy Navigation (TEN) tanker as a suspect in the case of the sinking of a naval frigate last year.
He is the fourth person to receive suspect status following the collision off the Sture terminal on 8 November, 2018.
The naval vessel Helge Ingstad was sunk following a clash with TEN's 113,000-dwt Sola TS (built 2013).