Muhammad Ali is in fair condition after being hospitalized for a respiratory infection.
Bob Gunnell, a spokesman for the boxing legend's family, released a statement to multiple news outlets about Ali's condition Thursday that said "a brief hospital stay is expected."
MORE: Most iconic sports photos | Champ questions pro boxers in Olympics
Ali has battled Parkinson's disease for years and was hospitalized in December 2014 and January 2015 for treatment of a urinary tract infection that was initially diagnosed as pneumonia.
The former heavyweight champion now lives in Arizona.