Former New York City Mayor Rudy Giuliani is hospitalized in critical, but stable condition, a spokesperson for the close ally of President Trump said Sunday.

“Mayor Rudy Giuliani is currently in the hospital, where he remains in critical but stable condition, the spokesperson said in a statement.

“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. We do ask that you join us in prayer for America’s Mayor-Rudy Giuliani.”

It’s unclear what ailment the 81-year-old ex-mayor and former Trump attorney is being treated for.

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