Brazil's World Cup qualifying clash against Argentina was sensationally halted shortly after kick-off on Sunday as controversy over Covid-19 protocols erupted. Amid incredible scenes at Sao Paulo's Neo Quimica Arena, the match between the two giants of South American football was halted when a group of Brazilian public health officials came onto the pitch, triggering a melee involving team staff and players. The stunning intervention came just hours after Brazil's health authorities said four players in Argentina's squad based in England should be placed in "immediate quarantine" for breaching Covid-19 protocols. IMAGES