Josh Hartnett has been sidelined by a nasty stomach bug.
The actor was hospitalized early this morning after complaining of severe abdominal pain, his publicist tells E! News.
Hartnett was out Sunday at Hollywood's Chateau Marmont when he began "suffering from a flare of a gastrointestinal problem that plagued him while he was starring in the West End of London during the production of Rain Man," says rep Susan Patricola. The actor was laid up for a few days last November.
Patricola says Hartnett walked into an ambulance under his own power about 1:45 a.m. He was taken to Cedars-Sinai Medical Center.
"He is under observation but is resting comfortably," she says.