The United Nations nuclear agency said Friday it would cost it about 6 million euro ($8.2 million) to verify the implementation of a landmark nuclear agreement between Iran and six world powers.

The United Nations nuclear agency said Friday it would cost it about 6 million euro ($8.2 million) to verify the implementation of a landmark nuclear agreement between Iran and six world powers.

A confidential report to member states, obtained by Reuters, said that the International Atomic Energy Agency (IAEA) needed extra money from member states to pay for most of it.

The IAEA will play a pivotal role in checking that Iran lives up to its commitment to curb disputed nuclear work, in exchange for easing international sanctions.

The IAEA's 35-nation board will hold an extraordinary board session on January 24 to discuss the nuclear agency's increased workload as a result of the interim deal between Iran and the United States, France, Germany, Britain, China and Russia.

The IAEA already visits Iranian nuclear sites regularly to make sure there is no diversion of sensitive material for military purposes. It has two to four inspectors on the ground virtually every day of the year.

But its role in Iran, whose nuclear-related sites are spread out across the large country, will expand sharply under the deal hammered out in Geneva nearly two months ago.

The IAEA already devotes about 10 percent of its annual 121 million-euro inspections budget to Iran. The agency's total regular budget for 2014 budget stands at 344 million euros.

Diplomats said they did not believe there would be any difficulty in raising the money required as many member states have already expressed a willingness to help, not only the powers directly involved in negotiations with Iran. The IAEA has 160 member states.

"The money is not going to be an issue," one envoy said.