Iran says UN nuclear inspectors tonight have begun installing monitoring equipment at a nuclear plant in Isfahan, in preparation for the country's resumption of uranium reprocessing. Ali Aghamohammadi, spokesman for the Supreme National Security Council, made the announcement on state television. Earlier today, Iran announced its intention to resume some nuclear activities. Tehran informed the International Atomic Energy Agency, the UN's nuclear watchdog, of its decision and invited IAEA inspectors to monitor the work. But IAEA spokeswoman Melissa Fleming told Radio Farda it will take time for inspectors to set up their equipment. She said the IAEA is calling on Iran to rethink its decision and to continue talks led by Germany, Britain and France, on behalf of the EU. She continued: "It would take us about a week to install the equipment that would be necessary to have in place before they could resume any activities there and also (IAEA) Director-General El Baradei reacted in a statement today. He called on Iran to continue the negotiation process with the EU-3 and not to take any action that might prejudice the process at this critical stage." Also today, White House spokesman Scott McClellan warned Iran against restarting its nuclear activities, saying such an action could lead the U.S. and its European allies to seek UN sanctions in the Security Council.