Los Angeles, March 16 -- Actor Sean Penn has added one more Oscar to his kitty, courtesy of his performance in 'One Battle After Another'.

On Sunday, he was announced as the winner of Best Actor in a Supporting Role. Sean Penn did not attend the ceremony to accept his award. It was accepted for him by presenter Kieran Culkin.

"Sean Penn couldn't be here tonight--or didn't want to," quipped Kieran Culkin, last year's best supporting actor winner, after he announced the category onstage.

Sean Penn, now a three-time Oscar winner, was nominated alongside Benicio del Toro (also for One Battle After Another), Delroy Lindo for Sinners and Stellan Skarsgard for Sentimental Value.

'One Battle After Another' follows Bob, played by DiCaprio, a f...