"The work we're doing is not illegal," he told a press conference concluding a three-day visit to Mexico.
"We have decided (to use) nuclear energy for peaceful purposes and, as we are building seven nuclear installations over the next 20 years, it is natural that for fuel we should produce (the centrifuges) within our own country."
He added that the centrifuges were being built "under the supervision of the International Atomic Energy Agency (IAEA), and they are assuring that we have no intentions toward nuclear arms and that our work is legal."
In February, Iran promised to halt centrifuge component building, in a deal with Britain, France and Germany in return for which the three European Union powers promised help in normalising the Islamic republic's relations with the
But Iran claims the European commitments were not honored and, "therefore we have not kept our promise to suspend the construction of the centrifuges," said Kharazi.