Two brothers of the late Paul Walker have joined the cast of Fast and Furious 7 to help filmmakers complete unfinished action scenes for the movie.

Universal Pictures had halted production of the film out of respect for Walker, who died in a car crash at age 40 on Nov. 30. But a long note to fans on the film's Facebook page on Tuesday revealed that filming had resumed — with help from Walker's siblings, Caleb and Cody.

"Paul had already shot his dramatic scenes and most of his action for Fast and Furious 7, and it’s among the strongest work of his career," the post reads. "We have resumed shooting and now welcome Paul's brothers, Caleb and Cody, into our Fast and Furious family.

"Caleb and Cody are helping us complete some remaining action for their brother, and fill in small gaps left in production. Having them on set has made us all feel that Paul is with us too."

Walker played undercover agent Brian O'Conner in the Fast and Furious films, which have earned $2.3 billion worldwide since 2001. Fast and Furious 7 is scheduled to hit theaters on April 10, 2015. It was slated to debut in July before producers changed the date following Walker's death.

"This film is the most important we’ve ever done together," the Facebook post continues. "It will allow the character of Brian O’Conner to live on and let us celebrate Paul in his most defining role."

Facebook has been the primary way for fans to stay up-to-date on the film's production developments. In December, Fast and Furious costar Vin Diesel used Facebook to announce the new premiere date and to post a photo of his final scene with Walker, ending his post with "he'd want you to know first."

Here is the full note posted Tuesday on the Fast and Furious Facebook page:

The Fast and Furious franchise previously celebrated Walker's life with an emotional YouTube video set to Puff Daddy and Skylar Grey's "Coming Home."