(CNN) Olympics chief Thomas Bach says Games organizers are preparing for a "successful" Tokyo 2020 despite the ongoing worries around coronavirus.

However, Japan's minister for the Tokyo Olympic and Paralympic Games Seiko Hashimoto, told reporters that the Tokyo 2020 "Games could be postponed until later this year."

"In the contract signed by the IOC, the host city and others, it stated the IOC has the right to cancel the games only if they could not be held in 2020," Hashimoto said. "This could be taken to mean the games could be postponed until later this year."

Bach, who is the International Olympic Committee (IOC) president was speaking at an Executive Board meeting in Lausanne, Switzerland to discuss the threat of the virus, which has killed more than 3,100 people -- the vast majority of those in Asia -- and infected more than 90,000 in 70 different countries or territories.

Both the IOC and Tokyo 2020 Olympics organizers have repeatedly stressed that this summer's Games will go ahead as planned from July 24 to August 9.

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