A Norwegian navy ship was reported to be at risk of sinking following a collision with a Tsakos Energy Navigation (TEN) aframax tanker on Thursday.

The Norwegian coast guard said the collision involving the KNM Helge Ingstad frigate and the 113,000-dwt Sola TS (built 2017) happened in Hjeltefjorden, north of the Sture terminal.

"It took on a lot of water and there is a real danger that it sinks where it is," a rescue official told AFP.