Confusion emerged Tuesday over who will shoulder the additional costs for the postponed Tokyo Olympics after the International Olympic Committee said Prime Minister Shinzo Abe committed Japan to cover the amount while the top government spokesman denied any agreement.

In a question-and-answer post on its website Monday, the IOC said Abe has "agreed that Japan will continue to cover the costs it would have done under the terms of the existing agreement for 2020, and the IOC will continue to be responsible for its share of the costs."

"For the IOC, it is already clear that this amounts to several hundred millions of dollars of additional costs," it states.