South Africa's Sevens rugby coach Neil Powell has tested positive for COVID-19, a fourth confirmed infection for the country ahead of the Olympics.
Powell tested positive on arrival in Japan and is in isolation in Kagoshima where the Sevens squad are at a pre-Games training camp.
It follows the confirmation yesterday that two players and a team official from South Africa's football team competing at the Games had also tested positive.
Meanwhile, six British track and field athletes and two staff members have been forced to isolate after being identified as close contacts to an individual who tested positive on their flight to Japan.
The British Olympic Association said the group all tested negative at the airport and have continued to test negative upon arrival into the country.
In total, 11,000 athletes are due to spend time living in the village but will spend fewer days in Japan than they would at any other Olympic Games due to COVID-19 restrictions.