Algerian boxer Imane Khelif's 46-second win at the Paris Olympics on Thursday sparked a furious row about gender eligibility rules, with public figures from around the world weighing in on the controversy.

Hong Kong has emerged as a fencing powerhouse at the Paris Olympics, topping the sport's medal table with two gold medals, but the seeds of success were sown half a century ago.

Simone Biles seeks to make more history in her glittering Olympic gymnastics career by recapturing the all-around title on Thursday, as the athletics programme kicks off at the Paris Games.