At 06:41:50 (GMT), an earthquake Mw 5.9 struck Bushehr province, near the Genaveh. The event occurs in the Zagros Simple Folded Zone (ZSFB) region in the southern part of the Dezful Embayment. To find out the causative fault of this earthquake and investigate the active tectonics of the region and understand the rupture process and geometry of the causative fault plane, we used different seismological methods and studied the sources of this earthquake as well as its aftershocks sequence. We relocate the Genaveh seismic clusters by selecting 200 events with a magnitude above 3. Then, by using waveform modeling of regional stations, the focal mechanisms of the mainshock and 27 aftershocks with a magnitude larger than 4 were calculated. Our results show that, like other ZSFB earthquakes, this one has no surface rupture and the reverse mechanism dipping to the northeast is consistent with the Zagros Foredeep Fault and Zagros Mountain Front Fault. The centroid depth of the mainshock is about 8 km and aftershocks are between 4 to 12 km.