Earlier in the evening, Olivia Colman won Best Actress for her role in The Favourite while Bohemian Rhapsody collected awards for Best Sound Editing, Best Sound Mixing and Best Editing.
The Best Picture Oscar went to Green Book.
Elsewhere, Green Book star Mahershala Ali won the Oscar for Best Supporting Actor while Regina King won Best Supporting Actress for her performance in If Beale Street Could Talk.
Rami Malek spoke with paramedics after falling from the stage following his Best Actor Oscar win.