In May 2003 , Iran allowed IAEA inspectors to visit the Kalaye Electric Company .
In May 2003 , Iran refused to allow them to take samples , and an IAEA report the following month concluded that Iran had failed to meet its obligations under the previous agreement .
In May 2003 , Iran allowed IAEA inspectors to visit the Kalaye Electric Company , but refused to allow them to take samples , and an IAEA report the following month concluded that Iran had failed to meet its obligations under the previous agreement .