The non-linear trend, anomalous subsidence, and earthquake-caused sudden large movements are the three abnormal movements that can be observed in the earth's crust. This study investigates mentioned behaviors in the southeastern region of Iran using time series analysis of daily coordinates of 12 IPGN stations. According to the obtained results, four stations namely DBST, FDNG, FHRJ and GLMT have non-linear trends in their horizontal components which indicate the existence of accelerated motion in these stations. Enormous subsidence (about 60 mm/year) is also observed in FDNG and FHRJ stations. None of the 12 stations were found to be affected during the study time span by the earthquake and no post-seismic deformation is observed.