The delegation from Rome 2024, led by director general Diana Bianchedi, met with IOC officials at the organisation's headquarters in Lausanne to “prepare the administrative and financial management necessary for hosting the Olympic Games”.

Following the visit, Rome 2024 confirmed they had been promised a contribution of $1.7 billion (£1.3 billion/€1.5 billion) from the IOC should they be successful in their attempt to bring the world’s biggest sporting event to the Italian capital for the first time since 1960.

Expenses related to infrastructure, which will improve transportation and services and will be inherited by the city of Rome and the 11 other Italian cities participating in the Olympic project, will largely be covered by the National Government.

Bianchedi was joined by a number of key members of the Rome 2024 Bid Committee for the meeting in Lausanne, including international relations manager Simone Perillo and Francesco Romussi, the venue planning manager.

Bid advisors Roberto Daneo and Cathy Livock were also present.

Members of Lazio’s Regional Government and the Municipality of Rome were in attendance in support of Rome 2024.

“I would like to thank Jacqueline Barrett and the entire IOC team for the information they have provided,” Bianchedi said.

“It is thanks to this information that we are returning to Rome with renewed enthusiasm as we continue to address the necessary details with the many Italian institutions, with the sport world, and with all the other associations involved in our bid.

“In closing, I would like to thank the Municipality of Rome and Regione Lazio [Lazio's Regional Government] for having come with us and taken part in the work done today.”

The meeting came after Italian Prime Minister Matteo Renzi criticised Raggi, elected as Rome’s Mayor last month, for her negative stance on the Olympic bid.

Renzi has also urged her to change her view on the campaign and claimed the city is leading the race for the 2024 Games.

A delegation including Rome 2024 vice-president Luca Pancalli and Italian National Olympic Committee President Giovanni Malagò recently met with the city's Deputy Mayor Daniel Frongia, who has special responsibility for sport, as well as Rome's 5-Star Movement leader Paolo Ferrara.

Frongia claimed afterwards that the city was “open to dialogue”.

Budapest, Los Angeles and Paris are also bidding for the 2024 Olympics and Paralympics.

The IOC is due to elect the host city at the 2017 Session in Lima, due to be held in September.