Boxing legend "Muhammad Ali" dies at 74

Muhammad Ali, the world's greatest sporting legend dies on Friday, aged 74. He had breathing problems. He was the world Heavyweight champion three times. His nickname was "The Greatest". He was a civil rights hero and opponent of Vietnam war. Many world leaders and sporting figures have paid tribute to Ali. For example the daughter of Martin Luther King, wrote him : "You were a champion in so many ways. I think that Muhammed Ali is the greatest boxer of all times.