The Academy of Motion Pictures Arts and Sciences said Wednesday that Will Smith was asked to leave Sunday's Oscar ceremony after hitting Chris Rock, but refused to do so.

The Academy’s board of governors met Wednesday to initiate disciplinary proceedings against Smith for violations against the group’s standards of conduct.

The Academy said disciplinary action for Smith could include suspension, expulsion or other sanctions.

The Academy said Smith has the opportunity to defend himself in a written response before the board meets again on April 18.

Smith has already issued an apology to Rock, the Academy and to viewers.