Makran is formed as a consequence of the subduction of the Arabian plate beneath Central Iran. In this work we will use continuous seismic data of IASBS Makran temporary seismic network to detect non-volcanic tremors to indirectly estimate the depth of locking of megathrust zone of Makran. Any tremor activity can prove the existence of slow-slip earthquakes (SSE) in Makran. The SSEs are aseismic anomalies that take a long time to happen in comparison with ordinary earthquakes and are detectable by continuous GPS data. Tremor and SSE are the different manifestations of a single process that occur at the same time, the same place and by the same mechanism, namely shear slip at the termination region of a locked megathrust zone. Our analysis have detected seismic tremors around JazMurain depression indicating that the locked megathrust zone extends at least to south of JazMurain depression.