He was to be laid to be rest around midday - his headstone inscribed simply "Ali" - in a private graveside ceremony, followed in the afternoon by a grand memorial service attended by more than 15,000 people, including former President Bill Clinton and comedian Billy Crystal.
Watch the movie:
The Trials Of Muhammad Ali
Ali, the most magnetic and controversial athlete of the 20th century, died last Friday at 74 after a long battle with Parkinson's disease.
