Paul Walker's Death Certificate Released: Actor Died From "Combined Effects Of Traumatic And Thermal Injuries"

The official cause of Paul Walker's tragic death has been determined, according to the late actor's death certificate obtained by TMZ on

Monday, Dec. 16.

The Fast and Furious star, who was 40 at the time of his death, passed away from "combined effects of traumatic and thermal injuries," it says on the document. This means Walker did not die from the impact of the crash alone, but he also burned to death in the resulting fire.

As previously reported the actor died from a combination of "traumatic and thermal injuries" on Nov. 30, after the 2005 Porsche Carrera GT driven by his friend Roger Rodas lurched off the road and smashed into three trees and a lamp post. This then caused the vehicle to burst into flames. Both Rodas and Walker were pronounced dead at the scene.

Rodas, however, died upon impact from "multiple traumatic injuries"; Burning was not listed as a factor in the financial advisor's death. According to the certificate, both men died quickly, with the time period between the crash and their deaths determined as "rapid."

Detectives are still investigating the Santa Clarita crash scene that killed both men. Detective Jeff Maag told The Hollywood Reporter last week that it may take several months to determine the cause of the accident. "To the extent that we can, we need to rule out mechanical failure. But the car is a mess," he said. Maag also shared that the car was moving at least 45 miles per hour before the accident occurred.

Toxicology results are still pending for both men.

Walker's funeral was held on Saturday, Dec. 14 at Forest Lawn Cemetery in Los Angeles. The late actor's close friends and family gathered to say good-bye. "It was hard for many people to talk," an eyewitness told Us Weekly. "They were in tears and couldn't finish what they were saying."