U.S., Dec. 9 -- GFG Alliance, owned by British commodities tycoon Sanjeev Gupta, has agreed to buy the Duffel aluminium plant in Belgium from Novelis.

The deal for the plant, which supplies the auto industry and is one of the largest rolling mills in Europe, adds to a string of acquisitions in steel and aluminium across Europe by Gupta's privately-held group. No price was disclosed.

"The deal is consistent with GFG Alliance's strategy to create an international, vertically integrated aluminium business," GFG said in a statement.

The group, which said it aimed to close the Duffel deal in coming months subject to regulatory approval, bought Europe's biggest aluminium smelter in France last year from Rio Tinto Plc for $500mn and purchased...