Actress Brittany Murphy died Sunday morning; TMZ reports that she suffered full cardiac arrest.
An emergency call was made from the L.A. home of Murphy's husband, screenwriter Simon Monjack, at 8am.
The star, 32, was pronounced dead on arrival after being taken to Cedars-Sinai Medical Center.
Update: A source tells TMZ that Murphy's mother discovered her unconscious in the shower. When paramedics arrived, they determined that the actress was in full cardiac arrest, and they began to administer CPR. They continued their CPR attempts during the ambulance trip to the hospital, but Murphy was unresponsive.
Update: An autopsy may be performed Monday, Radaronline.com reports. An investigator from L.A. County Coroner's office is scheduled to interview attending physicians as well as Monjack and Murphy's mother, Sharon.
Update: A rep for the LAPD confirms to UsMagazine.com, "There is a death investigation involving the actress Brittany Murphy," with a full statement expected later on.
Update: Murphy's family has released the following statement to UsMagazine.com: "In this time of sadness, the family thanks you for your love and & support. It is their wish that you respect their privacy."
Murphy appeared in such films as Clueless, 8 Mile, Don't Say a Word and Sin City, and voiced the character of Luanne on TV's King of the Hill.