Production on "Fast & Furious 7" is on hold following the death of star Paul Walker.

Shooting on the film had been scheduled to resume this week in Atlanta but was canceled Monday and Tuesday. A spokesman for Universal Pictures declined to say when shooting will resume.

Production on the latest installment of the franchise began in September. While a large portion of the film has been shot, the movie is incomplete.

It's scheduled for release July 11, a date that could be difficult to meet with any lengthy delay. Universal Pictures is expected to go forward with the film, but it has not announced how it will adjust the movie or handle Walker's unfinished performance.

The franchise, which has starred Walker in all but one installment, is particularly lucrative for Universal. "Fast & Furious 6," released in May, was the highest grossing film in the series, earning more than $788 million worldwide.

The manner of Walker's death — a fiery car crash in a specialty sports car — was also so reminiscent of the films that made him famous that "Fast & Furious 7" will be under particular scrutiny for how it portrays the fatal risks of street car racing.

Police investigators are examining the cause of the crash that killed Walker, 40, and his friend and fellow fast-car enthusiast Roger Rodas on Saturday north of Los Angeles.

The Los Angeles County Sheriff's Department has said witnesses described the car "traveling alone at a high rate of speed" before the 2005 Porsche Carrera GT smashed into a light pole and tree, and then exploded in flames.

On Monday night, a private memorial for survivors and the cast and crew of the "Fast & Furious" movies was held inside a white tent erected around the crash site in Valencia. When it was over, Walker's co-star Vin Diesel emerged to thank fans for paying their respects to the actor.

Walker left behind two completed films that will be released.

He stars in the upcoming Hurricane Katrina drama "Hours," which Lionsgate's Pantelion Films will release Dec. 13 in limited theaters and on video-on-demand, as previously planned. Walker is a producer on the film, something he hadn't previously done.

Walker also stars in "Brick Mansions," a remake of the French action film "District B13" that Relativity plans to release early next year.

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