Brittany Murphy died from multiple drug intoxication, pneumonia and "iron deficiency anemia," Los Angeles coroners said Thursday, ruling the actress's death an accident.

The Los Angeles County Coroner's office said the full autopsy report concerning the 32-year-old "Clueless" star would be available later this month.

Murphy died at her home in Los Angeles on December 20, her sudden death causing shockwaves to ripple across the entertainment industry and triggering inevitable speculation that drugs were responsible.

Murphy made her name in television sitcoms during the 1990s before grabbing notable roles in "Clueless," the Oscar-winning "Girl, Interrupted," "Sin City," "8 Mile" and animated hit "Happy Feet."

She provided the voice of Luanne Platter in more than 200 episodes of the animated television sitcom "King Of The Hill."

Born in Atlanta, Murphy was raised by her mother, Sharon, in New Jersey before moving to Los Angeles.

The star scored her first role in 1991 on the television show "Blossom," before landing a starring role that same year in "Drexell's Class."

She also had recurring roles in "Sister, Sister," "Party of Five" and "Boy Meets World."