UPDATE 1-GDF Suez says would contest any EU fine-CEO

PARIS, July 2 (Reuters) - GDF Suez (GSZ.PA) would appeal against any fine imposed by the European Commission on the French power group and German utility E.ON EONG.DE following an competition investigation, GDF Suez's head said on Thursday. "If it was the case we would appeal but let's wait and see calmly," Gerard Mestrallet told reporters on the sidelines of the Europlace business forum in Paris.

On WednesdayEU antitrust chief Neelie Kroes accused GDF Suez and E.ON of "serious" misconduct in allegedly carving up gas markets linked to their jointly-owned MEGAL pipeline.

Kroes is expected to rule on the case in the next few days.

"For the moment she (Kroes) is making comments a priori on a decision she has not made public yet," Mestrallet said.

The Commission's case against E.ON and GDF Suez was launched after raids on E.ON and the then Gaz de France group -- which merged with Suez in 2008 -- concerning their jointly-owned MEGAL pipeline from southern Germany to the French border. (Reporting by Marie Maitre and Muriel Boselli; Editing by Greg Mahlich)