later, but this positive result was detected in a third pcr test following the open championship in sandwich in kent in the uk last week. neither had travelled to tokyo but of course disappointment for them both that they will not be able to compete there. them both that they will not be able to compete there. absolutely, thank ou for to compete there. absolutely, thank you for that- an 18 year old athlete from tunisia has had a shock win here in tokyo with a gold medalfor the 400 metre men s freestyle race. ahmed hafnaoui beat a field of more experienced swimmers despite being the slowest qualifier for the final. our bbc africa reporter, celestine karoney, is here with me. tell us the story of this remarkable young man who would be a swimming star in tunisia now, surely. imilieu star in tunisia now, surely. when ou sa star in tunisia now, surely. when you say it star in tunisia now, surely. when you say it was star in tunisia now, surely. when you say it was a star in tunisia