Sheriff Deputy Aura Sierra said the investigation into the crash, in which the department earlier said that speed played a role, should take two more days.

Always Evolving posted a Twitter message thanking supporters while they "mourn the loss of our loved ones." The company could not be reached by phone.

Walker, who played supporting roles in 1998's "Pleasantville" and 1999's "Varsity Blues," was in five of the six "Fast & Furious" films about illegal street racing, heists and organized crime, portraying law enforcement officer Brian O'Conner.

Production of "Fast & Furious 7," which began filming in September, has been delayed but will not be scrapped, industry trade publication the Hollywood Reporter said, citing sources.

The publication reported that Comcast Corp-owned Universal Pictures, the big-budget film's studio, and "Fast 7" director James Wan spoke on Sunday about how to continue with the film following Walker's death.

A representative for Universal was not immediately available to comment on the status of the film, which is to be released on July 11.

The "Fast & Furious" franchise, which stars Vin Diesel, has grossed more than $2 billion at the global box office since its first film was released in 2001.

Walker stars in the Hurricane Katrina survival drama "Hours," which will be released on December 13, and also the crime drama "Brick Mansions," which is in post-production and will be released next year.