"Her body is here," a spokesman for the Los Angeles County Coroner's Office tells E! News. "But we want to have all of our ducks in a row and talk to the family before we release any information."
As with most high-profile cases, Chief Coroner Ed Winter requested the Johnson & Johnson heiress' case be placed on a security hold to ensure that the family, and not the press, is the first to hear any news.
Per standard procedure, there will be an autopsy later today, but the official cause of Johnson's death won't likely be announced for about six weeks, once toxicology test results come back.
However, the 30-year-old mother of one and fiancée of Tila Tequila did suffer from diabetes, and a Los Angeles Police Department spokeswoman told E! News that a preliminary investigation showed no signs of foul play and that the death appeared to be natural.
Never heard of Casey Johnson? Here are five things you need to know about the heiress.