Iran and the United States said the talks between Iran and the six major powers are focused on Tehran's nuclear program.
The remarks came after Argentina asked the United States to include a deadly 1994 bombing in the talks between Iran and the P5+1 (the five permanent members of the UN Security Council plus Germany) on a final nuclear deal to resolve the long-running nuclear dispute.
Argentine courts have accused a group of Iranians of planning the attack on the AMIA Jewish community center that killed 85 people. Iran has denied any involvement in the bombing.
On Tuesday, Argentine Foreign Minister Hector Timerman released a letter to his US counterpart John Kerry in which he said Argentina had made the request before, Reuters reported.
"I am asking you again that the AMIA issue be included in the negotiations with the Islamic Republic of Iran," it said.
In Washington, US State Department spokeswoman Jen Psaki said she was not aware of any plans to raise the AMIA issue in the negotiations.
"Let me first say that for over 20 years the United States and the international community have worked with the government of Argentina as well as victims of the bombing and their families in search for justice… (But) as it relates to the Iran negotiations, the Iran negotiations remain focused on the nuclear issue. That will continue," she said, according to a transcript of her remarks posted on the website of the State Department.
In her regular press briefing on Wednesday, Foreign ministry spokesperson Marzieh Afkham also said, "The framework of the nuclear negotiations is completely clear and the talks are only focused on the nuclear issue."
"The AMIA (investigation) is a domestic issue… we had previously announced our position on the case, and we denounce any terrorist actions," IRNA quoted her as saying.
