Iran is prone to earthquakes because it sits on major fault lines.
Last month, the same region was struck by a 7.3-magnitude natural disaster that left around 600 dead.
"The rescue teams present in the region have not reported any casualties or damage yet", the head of rescue operations for the Red Crescent told state broadcaster IRINN.
No deaths have been reported but 18 people were injured, state media said.
It struck at 12:13 pm (0843 GMT) with the epicentre near the town of Hejdak, some 50 kilometres (31 miles) north of the provincial capital of Kerman and about 800 kilometres from Tehran. Tremors were felt as far as Kuwait, Qatar, Turkey, Lebanon, Israel and the United Arab Emirates. As per the reports, Iranian Plateau is the subject of the most types of tectonic activity including faulting, volcanic eruptions and active folding. No casualties and damage have reported by the officials yet. Over the years, the quake killed thousands and just in one month, Iran has jolted with two risky earthquakes.