Oklahoma head football coach Brent Venables said now-former assistant coach Cale Gundy resigned after reading a racially charged word multiple times during a recent film session with players.| MORE | Oklahoma assistant football coach Cale Gundy resignsGundy announced his resignation Sunday night, during which he apologized and explained what happened. Gundy said he noticed a player was distracted while he was supposed to be taking notes, so he picked up the athlete’s iPad and read the words on the screen aloud. He acknowledged that he said a word that he "should never — under any circumstance — have uttered," and said he was "horrified" when he realized what he had done."What I said was not malicious; it wasn’t even intentional," Gundy said. "Still, I am mature enough to know that the word I said was shameful and hurtful, no matter what my intentions."| MORE | Online petition asks OU to rehire former assistant coach Cale GundyOn Monday afternoon, Venables released an updated statement about Gundy's resignation and provided more details about the incident."As painful as it has been dealing with Coach Gundy resigning from the program, it doesn't touch the experience of pain felt by a room full of young men I am charged to protect, lead and love. There are a few things I would like to address."Coach Gundy resigned from the program because he knows what he did was wrong. He chose to read aloud to his players, not once but multiple times, a racially charged word that is objectionable to everyone, and does not reflect the attitude and values of our university or our football program. This is not acceptable. Period. Coach Gundy did the right thing in resigning."He knows our goals for excellence and that coaches have special responsibilities to set an example. He also knows that, while he will always be a part of the OU family, that his words affected many of us and did not represent the principles of our university. Again, his resignation was the right thing to do, and we will move forward positively."Gundy was on staff for all 14 of the Sooners’ Big 12 titles and the national championship season in 2000. He spent the last seven seasons coaching wide receivers after spending the previous 16 seasons coaching running backs. He was one of the holdovers when Venables took over as head coach in December 2021.Venables said L’Damian Washington, who had been an offensive analyst, will coach receivers on an interim basis.NOTE: The Associated Press contributed to this article.