The autopsy for Paul Walker revealed the actor died of "combined effects of traumatic and thermal injuries," according to the Los Angeles County Coroner's Department.
The "Fast & Furious" star and his friend Roger Rodas were killed on Saturday when the Porsche Carrera GT they were traveling in crashed and caught fire.
The report formally identified Walker, 40, as the passenger, and Rodas, 38, as the driver. The report, which listed the incident as an accident, stated that Rodas died of "multiple traumatic injuries" and Walker of "combined effects of traumatic and thermal injuries."
A toxicology report is still pending for both men and should be completed in six to eight weeks.
The Los Angeles County Sheriff's Department insisted that speed was a factor in the one-car crash in the community of Valencia.
There has been an outpouring of support from fans all over the globe after news of his passing was posted to his social media accounts.
"It's with a heavy heart that we must confirm Paul Walker passed away today in a tragic car accident," read a tweet posted through his verified Twitter account at 9:14 p.m. Saturday.
It also directed the star's nearly 900,000 Twitter followers to a fuller comment on his Facebook account issued to nearly six million fans.
"It is with a truly heavy heart that we must confirm that Paul Walker passed away today in a tragic car accident while attending a charity event for his organization Reach Out Worldwide," noted the post.
Walker was on a break from filming the seventh film in the series and on Wednesday, morning Universal Pictures announced it was shutting down production on the latest sequel.
"Right now, all of us at Universal are dedicated to providing support to Paul's immediate family and our extended 'Fast & Furious' family of cast, crew, and filmmakers," the studio said in a statement. "At this time we feel it is our responsibility to shut down production on 'Fast & Furious 7' for a period of time so we can assess all options available to move forward with the franchise. We are committed to keeping 'Fast & Furious' fans informed, and we will provide further information to them when we have it. Until then, we know they join us in mourning the passing of our dear friend Paul Walker."