We're working on a possible visit," Gill Tudor, spokeswoman for the IAEA said on Wednesday without elaborating.
Western diplomats said on Monday that Iran reinstated an invitation offer for IAEA inspectors to visit the country after a previous invitation, issued in October, was rejected.
A senior diplomat, who spoke on condition of anonymity, said that a top-level IAEA mission could fly to Iran in late January if Tehran agrees to meet the agency's calls to supply information on its nuclear work.
Following the invitation, Iran's Ambassador to the IAEA Ali Asghar Soltanieh said on Tuesday that Tehran is ready to address any concerns about its nuclear program.
He added that Iran sent a letter to the UN nuclear agency chief Yukiya Amano earlier in December, saying, “I have also had discussions with the officials of the agency and we are planning for the visit."
"We are going to discuss any questions and to work towards removing the ambiguities and resolving the issue," he said.
The United States and the Israeli regime have repeatedly threatened Tehran with the "option" of a military strike against the Islamic Republic.
Despite the rhetorical and widely publicized claims by Washington and Tel Aviv and some of their European allies that Iran's nuclear program may include a military diversion, Iran insists that its nuclear program is civilian in nature.
Tehran argues that as a signatory to the nuclear Non-Proliferation Treaty (NPT) and a member of the IAEA, it has the right to develop and acquire nuclear technology for peaceful purposes.
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