RIO DE JANEIRO, Aug. 16, 2013 /PRNewswire/ -- Oi S.A. (BOVESPA: OIBR3, OIBR4; NYSE: OIBR.C, OIBR) (the " Company") discloses to its shareholders and the market in general that Fitch announced today its review of the credit rating attributed to the Company, downgrading the long-term rating from BBB to BBB-. The outlook remains negative.
Bayard De Paoli GontijoInvestor Relations Officer Oi S.A.
SOURCE Oi S.A.
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