The cost of hosting the Tokyo 2020 Olympic and Paralympic Games exceeded by 20 per cent than what was calculated ©Getty Images

The cost of hosting the Tokyo 2020 Olympic and Paralympic Games exceeded by 20 per cent than what was calculated by the Organising Committee, it has been reported.

Japan's audit Board, as reported by Kyodo News, has claimed that the total cost of the Games was ¥1.7trillion ($12.9 billion/£10.6 billion/€12.1 billion).

The discrepancy was due to a revision of the Central Government's share of costs.

The audit Board has added around ¥280 billion ($2.1 billion/£1.7 billion/€1.0 billion) - not included in the Organising Committee's final report in June - in Games-related expenses.

The report in June said that the total cost of the Games was ¥1.42 trillion ($10.7 billion/£8.9 billion/€10.1 billion).

The audit Board has also claimed that the Organising Committee did not include spending on factors like anti-doping measures, athlete training and renovation of the Olympic Stadium among others.

It criticised the Japanese Government and urged them to "reveal the total costs in a timely manner when it is substantially involved in a major event".

"Despite the fact that taxpayer money may have been needed to cover shortfalls, the total amount of government spending remains unknown," an audit Board official was quoted as saying by The Straits Times.

The audit Board has also claimed that the Organising Committee did not include spending on factors like renovation of the Olympic Stadium ©Getty Images
The audit Board has also claimed that the Organising Committee did not include spending on factors like renovation of the Olympic Stadium ©Getty Images

Initially, the organizers were supposed to cover ¥640 billion ($4.8 billion/£4 billion/€4.5 billion) of the total, with the Metropolitan Government paying ¥597 billion ($4.5 billion/£3.7 billion/€4.2 billion) and the Central Government ¥187 billion ($1.4 billion/£1.1 billion/€1.3 billion).

The Board also found that the Government spent ¥1.3 trillion ($9.8 billion/£8.1 billion/€9.2 billion) on 329 Games-related projects.

Meanwhile, a massive bribery scandal has tainted the Games.

Today three people, including former chairman of Aoki Holdings Hironori Aoki, have been charged in court with bribing a former Tokyo 2020 chief executive.

Hironori Aoki, his brother Takahisa Aoki and executive director Katsuhisa Ueda have been accused of paying $28,000,000 (£176,000/$210,000/€199,500) to Haruyuki Takahashi, who had influence over a committee that was charged with sponsorship selection.

The developing scandal has also impacted Sapporo's aim to bid for the 2030 Winter Olympics.

Earlier, the Japanese Olympic Committee and the City of Sapporo announced they were pausing their efforts to bid for the Games.