An unidentified woman placed a 911 call when she found Casey Johnson's "cold" body in her guesthouse.
"She's ice cold and her hands are turning blue," the woman told the dispatcher. "I have two other people with me and we all think she's dead."
When asked if she thought it was suicide, the woman replied "I don't know," and added, "Very often, her medications get all screwed up. It's probably because of that."
Johnson, an heiress to the Johnson & Johnson fortune, died on Jan. 4. She was 30.