A flight from San Francisco International Airport to Florida was disrupted after former heavyweight champion Mike Tyson assaulted a fellow passenger, a video appears to show. 

In the video, Tyson is seen leaning over his seat as he repeatedly lands punches to the unidentified man's head. Another person tries to push Tyson off the man.  

According to TMZ, prior to the assault, Tyson had agreed to take a picture with the passenger at the beginning of the flight on Wednesday. 

In 1987, at age 20, Tyson became the youngest ever heavyweight champion. He became one of the sport's most revered boxers

In 1992, Tyson was convicted of rape, for which he served three years in prison. Tyson has long maintained his innocence on that charge.