More than 400 migrant workers died in Qatar in the years leading up to the World Cup, the man in charge of the body responsible for organizing the tournament has said, reigniting a debate over the treatment those who built over $200 billion worth of structures for the tournament.Hassan al-Thawadi, the secretary-general of Qatar's Supreme Committee for Delivery and Legacy, told the British journalist Piers Morgan on Talk TV on Tuesday: "The estimate is around 400, between 400 and 500, I don't have the exact number, that's being discussed."The International Labor Organization, a U.N. agency that has an office in the country’s capital, Doha, said in a report last year that 50 migrant workers across all sectors died in work-related accidents in 2020, in addition to 38,000 work-related injuries, 500 of them classed as severe.Barun Ghimire, a human rights lawyer in Nepal who has represented the families of workers who have died in Qatar, told NBC News last year: "This 2022 World Cup, I often call it the blood diamond of World Cups.The Qatar World Cup, the first to be held in an Arab nation, has attracted plenty of controversy over not just the treatment of migrant workers, but Qatar's anti-LGBTQ policies and the banning of some fan costumes from stadiums."