EU : Greece says Merkel has raised the possibility of a referendum on the issue . EU : Merkel 's government denies the statement . Greece is holding fresh elections next month after a first vote failed to elect a government . Ratings agency Fitch has cut Greece 's credit rating amid concerns about its debt .
NEW : Greece says Merkel has raised the possibility of a referendum on the eurozone . NEW : Merkel 's government denies the statement . Greece is holding fresh elections next month after a first vote failed to produce a government . Ratings agency Fitch has cut Greece 's credit rating amid concerns about its future .