The accident occurred in the potroom.

Management representatives from Hydro's business area Aluminium Metal are on their way to Slovalco. A preliminary investigation has been initiated by the plant management.

Hydro will send an independent investigation team to Slovalco on Monday morning.

Hydro holds 55.3 percent of the shares in the Slovalco aluminium plant, located in Ziar nad Hronom, Slovakia.