Actress Alice Braga has joined the cast of the sci-fi thriller Elysium for director Neill Blomkamp.

It isn't known what role the actress will play, although she joins a cast that already includes Matt Damon, Jodie Foster, Sharlto Copley, William Fichtner, and Wagner Moura.

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Neill Blomkamp is directing Elysium from his own screenplay. Story details have been kept under wraps, although it is believed to be set in outer space and feature the same allegorical tones as Neill Blomkamp's first movie, District 9.

It isn't known when production will start on Elysium yet.