Diesel put up a spoiler-y photo on his Facebook page along with the caption "The first week of filming, has been both intense and surreal ... P.s. One from set... a more somber moment in Our Saga..."
Earlier this summer, "Fast & Furious 6" broke records when it earned a massive $120 million at the box office over the four-day Memorial Day Weekend.
The film went on to earn more than $788 million worldwide.
MINI-SPOILERS AHEAD.
The "somber" scene depicts what appears to be a funeral. If you've seen "Fast & Furious 6," this scene shouldn't come as a big surprise.
"Fast & Furious 7" is scheduled for a July 11 release next summer.
Check it out below: