Paul Walker's cause of death was revealed by the Los Angeles County Coroner's Office on Wednesday (Dec. 4).
The 40-year-old actor, who was in the passenger side of the Porsche Carrera GT, died of the combined effects of traumatic and thermal injuries, according to CNN. Roger Rodas, his friend and the driver, died of multiple traumatic injuries.
Thus, Walker did not die from the impact of the crash alone, TMZ noted.
Both deaths have been ruled an accident and toxicology reports are due within six to eight weeks.
Walker and Rodas' autopsies were completed Tuesday (Dec. 3). Release of the results was previously placed on a "security hold" until all information was collected and distributed to the media so as to prevent miscommunication.
The "Fast & Furious" actor died on Saturday (Nov. 30), when the car he was riding in crashed into a light pole and burst into flames in Valencia, Calif. The tragic accident occurred after the two left a fundraiser event held by Walker's charity, Reach Out Worldwide, to benefit the victims of the Philippines typhoon. The bodies were so badly burned they were only identifiable by dental records.
Speed may have been a factor in the crash, according to the L.A. Times, which occurred around 3:30 p.m. on Hercules Street, a block with a speed limit of 45 mph.
Walker is survived by his 15-year-old daughter, Meadow.