More than six weeks after her tragic passing, a cause of death has been determined for Brittany Murphy. According to the Los Angeles County Coroner’s Office report released on February 4, the actress suffered cardiac arrest after a deadly combination of pneumonia, iron-deficiency anemia and “multiple-drug intoxication.” Though officials confirmed that Brittany had ingested prescription drugs, the list of substances that lead to her accidental death will not be disclosed until the final toxicology report is released. The Clueless starlet was found unconscious in her Hollywood Hills home by her mother, Sharon, on December 20. She was pronounced dead upon arrival to the hospital.