04/03/2009 AT 7:00 PM ET
Josh Hartnett has been released from L.A.’s Cedars-Sinai Medical Center, where he had been hospitalized since Monday for a gastrointestinal problem. “He’s fine,” his rep Susan Patricola tells PEOPLE. “They are running tests, which take time to get back and it’s a process of elimination.”
The 30-year-old Pearl Harbor star was taken to the hospital by ambulance Monday after complaining of abdominal pains. Patricola said Hartnett was under observation for a “flare-up” of gastrointestinal problem he has been suffering from for several months since starring in the London stage version of Rain Man. “They just have to figure out what it is,” she says.