An autopsy is planned for Casey Johnson, the heiress to the Johnson & Johnson empire and daughter of the owner of the New York Jets who was found dead in her Los Angeles home.

Los Angeles County coroner spokesman Craig Harvey says the examination will be held Tuesday for the 30-year-old Johnson.

Johnson had diabetes, but it was unclear whether that was a factor in her death.

Harvey says he cannot provide other details and didn't immediately confirm police statements that there were no signs of foul play.

Additional tests, including a toxicology screening, could be ordered if the autopsy fails to determine the cause of death. Harvey says the results of those tests wouldn't be ready for weeks.

Paramedics pronounced Johnson dead Monday. She was the daughter of Woody Johnson and the girlfriend of reality TV star Tila Tequila.

This is a sad story, I will make sure to keep you updated.