Brittany Murphy's autopsy was concluded Monday afternoon and RadarOnline.com has learned that the results were deferred pending toxicology and
neurological test results.
Cause of death was listed as cardiac arrest but as RadarOnline.com exclusively reported the LAPD are still investigating, focusing on the possibility of a
prescription drug overdose.
The Los Angeles City Fire Department responded to an emergency call at 8 a.m. PST Sunday and transported Murphy to Cedars-Sinai Medical Center.
A hospital spokesperson said Murphy was pronounced dead at 10:04 a.m.
As RadarOnline.com exclusively reported hospital staff tried to revive the actress three times, with no success.