VATICAN CITY — A British-born Italian teenager who dedicated his short life to spreading the faith online and helping the poor will be beatified by the Catholic Church Saturday. That leaves him just one miracle away from becoming the world's first millennial saint. Internet and computer-mad youngster Carlo Acutis, who died of leukaemia in 2006 aged 15, was placed on the path to sainthood after the Vatican ruled he had miraculously saved another boy's life. The Vatican claims he interceded from heaven in 2013 to cure a Brazilian boy suffering from a rare pancreatic disease. He will be beatified in Assisi, the home of his idol Saint Francis, who dedicated his life to the poor. Some 3,000 people are expected to follow the ceremony on giant screens set up in five squares in the central Italian city.