Brittany Murphy's demise was caused by Pneumonia.

US actress Brittany Murphy died of pneumonia, a Los Angeles coroner has ruled.

Coroner's spokesman Craig Harvey added that iron-deficiency anaemia and "multiple drug intoxication" were secondary factors in her death.

The drugs were all prescription medicines. More details are due in two weeks when a complete report is ready.

Murphy collapsed at her Los Angeles home and was pronounced dead in hospital on 20 December, aged 32.

The coroner ruled the death was accidental.

The actress had been taken to hospital after the Los Angeles Fire Department responded to a call at her home.

Murphy's husband, Simon Monjack and mother, Sharon Murphy, said the actress had been experiencing flu-like symptoms in the days before she died.

Monjack told The Associated Press last month that his wife had several prescriptions, including one for an anti-seizure drug, but did not abuse her medication.

He added she had also been taking over-the-counter remedies for her ailments.

Murphy was best known for her roles in Clueless, Sin City and 8 Mile and also provided the voice of Luanne Platter in more than 200 episodes of the animated US sitcom King Of The Hill.