Los Angeles: Actor Will Smith has apologized to Chris Rock after he slapped the comedian during a nationally-televised altercation on Sunday night's Oscars.
"I would like to publicly apologize to you, Chris. I was out of line and I was wrong. I am embarrassed and my actions were not indicative of the man I want to be," the "King Richard" star wrote on Instagram.
"Violence in all of its forms is poisonous and destructive. My behaviour at last night's Academy Awards was unacceptable and inexcusable," Smith said.
"Jokes at my expense are a part of the job, but a joke about Jada's medical condition was too much for me to bear and I reacted emotionally."
"I would also like to apologize to the Academy, the producers of the show, all the attendees and everyone watching around the world. I would like to apologize to the Williams family and my 'King Richard' family. I deeply regret that my behaviour has stained what has been an otherwise gorgeous journey for all of us.
"I am a work in progress," the actor further wrote.
Smith -- who was named best actor on the night -- marched onto the stage during the glitzy Hollywood ceremony and hit Rock over a joke about wife Jada Pinkett Smith's hair.
Pinkett Smith suffers from alopecia, a condition that causes hair loss and had a closely cropped head at Sunday's ceremony.
The 94th Academy Awards was in its final hour when actor and comedian Rock quipped that Pinkett Smith appeared ready to star in "G.I. Jane 2" -- a putative sequel to a film about a female soldier who has a shaved head.
During his acceptance speech Sunday, Smith apologized to the Academy, but he is now apologizing directly to Rock, saying that he was "out of line" with his behaviour during the ceremony.
Smith's formal apology came hours after the Academy condemned his behaviour and said it was looking at possible sanctions.
"We have officially started a formal review around the incident and will explore further action and consequences in accordance with our Bylaws, Standards of Conduct and California law," a statement said.
Celebrities from Tinseltown and beyond reacted with shock and stunned amazement to Smith's outburst, with some defending him and others condemning a display of "toxic masculinity."