Moonlight won the Oscar for best picture, beating favourite La La Land amid confusion caused by a wrong announcement by the host.

Presenter Warren Beatty first, mistakenly announced that musical La La Land had won the best picture award, causing confusion and uproar. Beatty said he had been given the wrong envelope to open, a Reuters report said.

La La Land director Damien Chazelle, 32, won the best director Oscar, thus becaming the youngest person to ever win the award.

Emma Stone won best actress for La La Land, and Manchester by the Sea star Casey Affleck was named best actor.

Viola Davis and Mahershala Ali won their first Oscars for their supporting roles in African-American stories Fences and Moonlight.

The full list of winners at the 89th Academy Awards:

Best picture: Moonlight
Best director: La La Land - Damien Chazelle
Best actor: Casey Affleck - Manchester by the Sea
Best actress: Emma Stone - La La Land
Best supporting actor: Mahershala Ali - Moonlight
Best supporting actress: Viola Davis - Fences
Best cinematography: La La Land - Linus Sandgren
Best costume design: Fantastic Beasts and Where to Find Them - Colleen Atwood
Best make-up and hairstyling: Suicide Squad - Alessandro Bertolazzi, Giorgio Gregorini and Christopher Nelson
Best documentary feature: OJ: Made in America
Best sound editing: Arrival - Sylvain Bellemare
Best sound mixing: Hacksaw Ridge - Kevin O'Connell, Andy Wright, Robert Mackenzie and Peter Grace
Best foreign language film: The Salesman - Iran
Best animated short: Piper - Alan Barillaro and Marc Sondheimer
Best animated feature: Zootopia
Best production design: La La Land - David Wasco and Sandy Reynolds-Wasco
Best visual effects: The Jungle Book - Robert Legato, Adam Valdez, Andrew R Jones and Dan Lemmon
Best film editing: Hacksaw Ridge - John Gilbert
Best documentary short: The White Helmets - Orlando von Einsiedel and Joanna Natasegara
Best live action short: Sing - Kristof Deak and Anna Udvardy
Best original score: La La Land - Justin Hurwitz
Best original song: La La Land - City of Stars by Justin Hurwitz, Benj Pasek and Justin Paul
Best original screenplay: Manchester by the Sea - Kenneth Lonergan
Best adapted screenplay: Moonlight - Barry Jenkins and Alvin McCraney