updated 01/03/2014 AT 1:35 PM ET
•originally published 01/03/2014 AT 1:30 PM ET
The report, issued Friday by the Los Angeles County Coroner just over a month after the Nov. 30 wreck claimed Walker, 40, and the driver, Roger Rodas, 38, confirms earlier, unofficial reports that speed was the main cause of the wreck on public streets in Santa Clarita, Calif.
It also provides a detailed description of the crash. The report says the bodies were so badly burned that Rodas had to be identified through dental records, while Walker “cannot be positively identified visually.”