India, July 26 -- This article contains spoilers to Fantastic Four: First Steps

Director Matt Shakman has confirmed that the mid-credits scene in The Fantastic Four: First Steps was not helmed by him - but by none other than Anthony and Joe Russo. In an interview with Entertainment Weekly, Matt revealed that the post-credits moment, which has become one of the most talked-about Marvel teases in recent years, was shot during production on Avengers: Doomsday.

"The Russos did end up directing that (Thunderbolts) post-credits scene, and they also did the one for this movie as well," Matt said, explaining, "Just because they were done during the production of Avengers: Doomsday. You've got all those actors there, you've got those sets there,...