SAN JUAN - Puerto Rican former boxer Hector "Macho” Camacho has died in hospital after being taken off his life support machines, doctors have said.The three-time world champion was clinically brain dead after being shot in the head in a drive-by shooting near the capital, San Juan, on Tuesday.The boxer, who was 50, fought some of the great names of boxing during a three-decade career.They included Oscar de la Hoya, Sugar Ray Leonard and Felix Trinidad. Camacho was being treated at the Rio Piedras medical centre in San Juan.The centre’s director Ernesto Torres told reporters that the former boxer went into cardiac arrest in the early hours of Saturday morning, was taken off life support and died shortly after.Earlier Camacho’s mother Maria Matias said she wanted doctors to remove her son from life support.FlamboyantCamacho was shot in the head on Tuesday while sitting in a car outside a bar in his home city of Bayamon, outside the capital San Juan.His friend Adrian Mojica Moreno was killed in the attack. Police said the car contained bags of cocaine at the time of the shooting, but said they did not know of any motives behind the attack.Camacho was known for his flamboyant style and skill in the ring, but later became known for his troubled personal life and run-ins with the police.He was sentenced to seven years in prison for burglary in 2007, though the sentence was later suspended.He was found in possession of drugs and was the subject of a restraining order brought by ex-wife, who complained of domestic abuse.Agencies