Did a masseuse call a young actress after finding Ledger's body?

The Associated Press reports that the massage therapist who found HEATH LEDGER at the site of his death called MARY-KATE OLSEN upon discovering that the actor was unconscious.

The AP reports that after Olsen -- a contact on Ledger's cell phone -- told the masseuse that she would send over her private security, the massage therapist then dialed 911, and paramedics arrived with Olsen's security detail minutes later.

According to the AP, New York police say 28-year-old Ledger likely died Tuesday some time between 1 p.m. and 2:45, but police could not confirm that timeline to ET. At 1 p.m. the loft's housekeeper entered the actor's room to change a light bulb and witnessed him asleep, snoring, according to the AP. The massage therapist knocked on Ledger's door at approximately 2:45 and went in to investigate after not receiving an answer, the news service reports.