An autopsy has been completed for "Fast and the Furious" star Paul Walker, who died in a fiery crash this weekend.
Meanwhile, officials say they ruled out drag racing in the search for what caused the crash that killed Walker and his close friend.
Walker's co-star Vin Diesel had a message for fans at the California crash site. Diesel paid his respects at the makeshift memorial in Santa Clarita.
Police say there's no evidence a second car was racing the Porsche driven by Walker's friend Roger Rodas when it slammed into a tree Saturday.
Cops say speed was a factor in the crash.