The entertainment news Web site said Hargitay, 44, complained of chest pains on the set of her TV drama "Law & Order: Special Victims Unit" Tuesday night and was taken to a New York hospital.
The report didn't offer details about her condition, what kind of treatment she is undergoing or how long she is expected to stay at the medical facility.
Her recent past two hospitalizations were so she could be treated for a collapsed lung.
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