The most important task for the seismic network of the International Monitoring System (IMS) is to detect and locate underground nuclear explosions. The IMS was designed by the Group of Experts during the CTBT negotiations in Geneva and also include radionuclide, hydroacoustic and infrasound networks. For location and identification of an underground source seismology is a complementary technique to the fundamental radionuclide measurements. When a suspicious event is located a state party can request an on-site inspection. Detection of specific radionuclides can unveil a breach of the provisions of the treaty. In this report we show some characteristics of the seismicity in Iran and its border regions. The location of events from year 2000 up to and including 2007 is presented and b values for selected parts of Iran are also given. We show how the mb(Ms)values from the seismic network of the IMS can be used to discriminate earthquakes from explosions and we also estimate short-period identification (SPIDs) parameters for the Hagfors station in Sweden. This is a complementary contribution of the National Data Centre (NDC) for identification of earthquakes in Iran. The SPIDs computed are complexity, spectral ratio and third moment of frequency. The SPIDs are computed for two sensors: one narrow band GS-13 at site HFA0 and one broadband STS-2 at site HFC2. Of sixty-two events studied, sixty events are presumed to be earthquakes due to IDC scores, mb(Ms) measurements of Third Moment of Frequency measurements. Two events, with no score or Ms(REB) reported, are not detected at Hagfors and waveforms from other IMS stations were requested for analysis. Requested signals from regional stations have been studied but proceding events make it difficult to observe any surface waves. However, several earthquakes are located to the same very active area around this time and the two events are probably earthquakes.