And now, to the latest on actor paul walker's death and that of his friend. The results of the star's autopsy revealed on wednesday. And overnight, an emotional tribute from the cast, now one of the... See More
And now, to the latest on actor paul walker's death and that of his friend. The results of the star's autopsy revealed on wednesday. And overnight, an emotional tribute from the cast, now one of the top videos on youtube, as universal pictures says, it's topping production on the latest "fast & furious" movie. David wright has the story. Reporter: A viral video tribute, repurposed from the "fast & furious" movies. The most important thing in life will always be the people in this room. Reporter: And posted to youtube by the cast. An emotional farewell to a co-star gone too soon in a real-life fiery crash. Universal pictures has announced it is temporarily shutting down production of "fast & furious 7," while the cast and crew mourn paul walker's death. They have to figure out what the story's going to be. Whether they're going to keep him in the movie at all. They want a little bit of time to make those decisions. Reporter: This, as walker's real-life girlfriend appeared in public for the first time since the accident. Appearing somber outside walker's family home. The l.A. Coroner has ruled the cause of death was traumatic and thermal injuries. The car, driven by walker's friend, who also died, ran into a fixed object. Their deaths have been ruled accidental. But toxicology tests won't be back for up to two months. The "fast & furious" star's sudden death has cast a shadow over the $2.3 billion movie franchise that rocketed walker to fame. It's hard to watch scenes like this, without thinking about how walker died. Universal says part of the proceeds from "fast & furious 6" will go to walker's charity. For "good morning america," david wright, abc news,
This transcript has been automatically generated and may not be 100% accurate.