CHICAGO - Detroit officials are charging that Moody's Investors Service used new and inconsistent criteria in rating the city's general obligation debt when it downgraded the city to the non-investment grade rating of Ba1 from Baa on Thursday.

In a press release issued late Thursday afternoon. Mayor Coleman Young charged that the criteria used by Moody's in its rating decision "is substantially different from the criteria Moody's has used to rate any other large American city."

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