Jaafar Jackson, who recently played his late uncle Michael Jackson in the hit biopic 'Michael,' has signed on to star in the action thriller 'Supermax' alongside Will Smith and AnnaSophia Robb. The film, from Amazon MGM Studios and Miramax, will be directed by David Gordon Green. According to reports, the story follows FBI agents investigating a murder inside a maximum security prison. Jackson's specific role has not been disclosed. The young actor gained widespread attention for his breakout performance in 'Michael,' which has grossed over $1 billion worldwide for Lionsgate. That film's success has made Jackson one of the most sought-after emerging actors in Hollywood. The addition of Jackson strengthens an already notable cast for 'Supermax,' which marks a return to action filmmaking for Smith. Production details and a release date have not yet been announced. The project is expected to bring together the star power of Smith, the rising profile of Jackson, and the directing talents of Green, known for his work across genres including horror and comedy. With the combination of a high-concept prison setting and a strong ensemble, 'Supermax' is shaping up to be a major studio release. Further casting announcements are likely as the project moves forward.