At 3:31 p.m., a masseuse arrived at Apartment 5A in the building for an appointment with Mr. Ledger, police said.

The masseuse was let in to the home by a housekeeper, who then knocked on the door of Mr. Ledger’s bedroom. When no one answered, the housekeeper and the masseuse opened the bedroom and found Mr. Ledger unconscious.

They shook him, but he did not respond. They immediately called the authorities. The police said they did not suspect foul play and said they found pills near the body.

We're told when paramedics responded, the actor was in full cardiac arrest. They attempted to perform CPR on him, but were unsuccessful. He was pronounced dead at the scene.

Heath Ledger: Click to watchTMZ reports: The 28-year-old actor has a two year old daughter with former fiancee Michelle Williams -- they separated in September, 2007. He plays The Joker in the upcoming Batman film, "The Dark Knight" and is perhaps best known for his groundbreaking role as Ennis in "Brokeback Mountain."