Iran has struck the International Atomic Energy Agency (IAEA) for committing a “historic mistake” by releasing a controversial report, which has already sown divisions among the six global powers that are dealing with Tehran's nuclear programme.

 Ali Asgar Soltaniyeh, described the report released on Tuesday as “skewed, unprofessional and political”.

He stressed that the findings of IAEA Director-General Yukiya Amano had impaired the agency's credibility.

Soltaniyeh accused Amano of unprofessional conduct and behaving in a politically motivated manner, citing the Director-General's refusal to hold as requested, negotiations with Iran to clear the air.

Mr. Amano's report that was distributed among the 35 members of the IAEA Board on Tuesday evening contains a 15-page annexure, which focuses on Iran's alleged studies that appears to suggest that Tehran has been engaged in developing atomic weapons.

The report refers to satellite pictures taken at Iran's Parchin military facility, of a steel container that can be used for testing explosives, triggering pressure waves that can detonate fissile material. It has also claimed that Tehran is building computer models of a missile cone that can carry a nuclear payload.

Besides, Iran has apparently benefited from foreign expertise in carrying out experiments with nuclear material.