(MarketWatch) -- Ratings agency Standard & Poor's is set to announce later on Friday that it has cut France's coveted triple-A rating, undermining euro-zone efforts to solve a persistent sovereign debt crisis, according to media reports on Friday.
French news agency Agence France Presse, citing an unnamed government source, reported on its website that S&P had already informed the French government of the move. Neither the rating agency nor the French finance ministry would comment, AFP reported.