New Delhi, May 4 -- Former New York City Mayor Rudolph Giuliani is hospitalized in critical but stable condition, his spokesperson said Sunday, days after the Republican hoarsely told his talk show audience that his voice was "a little under the weather."

The spokesperson, Ted Goodman, didn't say what sent Giuliani, 81, to the hospital, how long he's been there or what his prognosis is.

"Mayor Giuliani is a fighter who has faced every challenge in his life with unwavering strength, and he's fighting with that same level of strength as we speak," Goodman said in a statement. He said that Giuliani "remains in critical but stable condition."

Giuliani's eight-year tenure as the mayor of the nation's largest city was punctuated by the 9/11 ...