Moody's Investors Service has said it has placed the ratings for Qtel under review, following change in outlook to negative from stable of the Ba1 Corporate Family Rating for PT Indosat Tbk (Indosat), in which Qtel has a 65% stake. The A1 long term ratings for Qtel, the A1 rating for Qtel International Finance Limited and A1-rated bonds issued under Qtel's GMTN programme have been placed under review for possible downgrade, Moody's said.