Drama at the Oscars as Will Smith slaps Chris Rock

But the theatre turned somber moments later when Smith, back in his seat, shouted back, "Keep my wife's name out of your fucking mouth." Smith's comment was silenced during the live U.S. broadcast on Walt Disney Co's ABC.

The proceedings resumed with awards, including the one for Campion for dark Western "Power of the Dog.""Thank you academy. It's certainly a lifetime honor," she said as she accepted her award.

Best Supporting Actor

Troy Kotsur was named best supporting actor for his role in "CODA," an acronym for "child of deaf adults." Kotsur played Frank Rossi, the father of a teenager who struggles to help her family's fishing business while pursuing her own aspirations in music.

"This is amazing to be here on this journey. I cannot believe I am here," Kotsur said in a heartfelt speech delivered in sign language as he accepted the supporting actor honor.