Josh Hartnett is under observation for a gastrointestinal disorder following his admittance to a Los Angeles hospital on Monday.
The Black Hawk Down star, 30, was enjoying a night out at the famed Chateau Marmont hotel in West Hollywood when he was struck down with the illness.
Hartnett is now being treated at Cedars-Sinai Medical Center and his representative reveals the actor's ailment is a recurring one.
His spokesperson tells Usmagazine.com, "Josh Hartnett walked into an ambulance at approximately 1.45 am this morning suffering from a flare-up of a gastrointestinal problem that plagued him while he was starring in the West End of London during last year's production of Rain Man."
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