CALGARY - Suncor Energy has announced that nearly 73 per cent of Canadian Oil Sands shares and accompanying rights have been tendered to Suncor's offer.

Suncor officials said that as a result, the company will be able to ensure that a subsequent acquisition transaction will be completed and Suncor (TSX:SU) will acquire the remainder of the outstanding COS shares.

In mid-January, COS (TSX:COS) accepted a sweetened takeover offer from Suncor Energy as the market outlook for oilsands producers deteriorates.

The deal drew to a close a bitter takeover battle that pitted two partners in the massive Syncrude oilsands mine against each other.

Suncor offered to exchange 0.28 of one of its shares for each COS share -- up from 0.25 of a Suncor share per COS share.

Steve Williams, Suncor president and chief executive officer, said they were pleased with the strong level of support from COS shareholders.