Brittany Murphy's Mom Cries Out "Brittany Please Come Back!" During Frantic 911 Call Released Today. As Husband Tries To Revive Actress (Audio Inside)

Brittany Murphy's mom and husband desperately tried to revive the actress the morning she died, according to a 911 call released Friday (January 8) to The Associated Press.

"My daughter's passed out," Sharon Murphy tells the 911 operator, who proceeds to relay CPR instructions to the distraught mom. Brittany Murphy's husband, Simon Monjack, can be heard in the background trying to revive the actress and following Sharon's instructions via the dispatcher.

During the eight-minute call, Sharon is heard wailing and screaming, "Brittany, please come back!" She told the operator that Murphy had been ill earlier and had vomited.

An initial autopsy was performed on Murphy in Los Angeles on December 21, the day after she was found unconscious in her Hollywood Hills home and later pronounced dead at the hospital. In an e-mail to MTV News, representatives for the Los Angeles County Coroner's office disclosed the initial results.

"The Los Angeles County Department of Coroner conducted an autopsy on the body of Brittany Anne Murphy-Monjack, age 32, on December 21, 2009," the statement reads. "The cause of death has been DEFERRED pending the receipt of additional toxicological tests and tissue studies that have been ordered by the deputy medical examiner.

"There will be no final ruling as to the cause and manner of death until all of the requested test results have been received and reviewed in context with the autopsy findings. It is anticipated that this process may take approximately 4 to 6 weeks or more. Anatomical findings show no evidence of trauma to the body."

As initial reports suggested, foul play is not suspected in her death. Murphy's family laid the actress to rest Christmas Eve.