Michael Clarke Duncan

Michael Clarke Duncan has been hospitalized after going into cardiac arrest early Friday, TMZ reports.

A rep for the actor's girlfriend, Apprentice alum Omarosa Stallworth, confirmed to Reuters that Duncan was hospitalized, but did not provide more details.

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According to TMZ, Stallworth found The Green Mile actor just before 2 a.m., performed CPR and was able to resuscitate Duncan before he was transported to a Los Angeles hospital. The 54-year old actor's heart rate is now stable and doctors are still performing tests, TMZ says.