ET has the latest...

ET confirms actor HEATH LEDGER, 28, was found dead today at a New York City residence. He was pronounced dead at 3:45 p.m. EST. The NYPD tells ET the investigation is ongoing.

New York police tell ET the Oscar-nominated actor was found by a housekeeper and a masseuse, who found him unclothed and unresponsive. Prescription sleeping pills that were prescribed to Heath were found in the house. Police said they wouldn't call it a suicide, nor would they refer to where he was found as a "crime scene."

Heath, a native Australian, has one daughter, MATILDA, 2, whom he had with his ex-girlfriend, actress MICHELLE WILLIAMS.