The official, in his 60s, tested positive on Thursday evening at the airport with mild symptoms and pre-existing conditions, a local television station TV Asahi stated, without giving further details.

He is the first foreign official to be hospitalised because of COVID-19 on arrival in Tokyo, according to the TV station.

The second batch of Team Nigeria’s contingent to the 2020 Tokyo Olympics arrived in the early hours of Thursday for the team’s pre-Games training camp in Kisarazu, Japan.

The team comprises 22 athletes (athletics, taekwondo and wrestling), including their coaches and 20 other officials.