The Athletes Village, with 21 residential buildings, 3,600 rooms and 18,000 beds, only opened on Tuesday (Image: Getty Images)

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Ten members of Team GB have been forced to self isolate just days before the start of the Tokyo Olympics.

Six of the athletics team and four support staff were pinged after coming off two separate flights. All have tested negative.

World champions Dina Asher-Smith and Katarina Johnson-Thompson are not believed to be among the athletes contacted after a fellow passenger unconnected to the team was found to have Covid.

Team GB boss Mark England said: “This is disappointing news for the athletes and staff, but we absolutely respect the protocols in place.

“We will offer them every support during this period and we are hopeful that they will be able resume training again soon.”

That could be within 48 hours if each provides two negative PCR tests, yet a more nagging concern for organisers is the spread of the virus into the Village.

(Image: Getty Images)

The facility, with 21 residential buildings, 3,600 rooms and 18,000 beds, only opened to athletes on Tuesday.

Three members of South Africa’s men’s under-23 football team have been placed in isolation after returning positive tests.

The alarming development follows Olympics boss Thomas Bach assuring a fearful Japanese public that the Games would be “safe and secure”.

(Image: REUTERS)

These Games, staged in a city operating under a state of emergency, have been walking a tightrope from the very start.

Last night they really started to wobble.

The rest of South Africa’s football team tested negative a second time but that will do little to dispel fears among competitors that the virus is now loose in a supposedly controlled environment.

Defending taekwondo champion Jade Jones
(Image: PA)

Taekwondo champion Jade Jones admitted on Thursday that she was “petrified” of getting pinged and having her shot at a third gold medal snatched away.

Seiko Hashimoto, president of the organising committee, said: “The athletes who come to Japan are probably very worried and I understand that.

“In the Village we are doing everything we can to make sure it is Covid secure, and everything possible at the venues too.

“If we end up with a Covid outbreak we will take the necessary steps then as well.”