Tens of earthquakes, including one with a magnitude of 6.1, have staggered parts of southeastern Iranian province of Kerman, leaving some homes damaged but there is no report of casualties, Press TV reported.
According to the University of Tehran's Geophysics Institute, three quakes jolted the city of Bam and the towns of Fahraj and Roodbar in the south of the Kerman province on Thursday, while 31 more minor or relatively strong earthquakes were recorded in the town of Mohammadabad-Rigan, IRNA reported.
The city of Mohammadabad-Rigan located some 100 km (60 miles) southeast of Bam suffered the brunt of tremors with both the strongest at 6.1-magnitude and the smallest-size at 3-magnitude occurring in the villages surrounding the town.
The first tremor measuring 5.1 on the Richter scale struck Mohammadabad at 10:32 a.m. local time (0702 GMT), while the last one hit the city at 20:25 p.m. local time (1655 GMT) on Thursday afternoon.
According to local officials, string of earthquakes left some homes in the villages damaged, but there were no reports of casualties.
Iran is one of the most seismically active countries in the world, being crossed by several major fault lines in the Earth's crust that cover at least 90% of the country.
The worst quake in Iran in recent times was a magnitude-6.6 quake which hit the southern city of Bam in December 2003, killing about 30,000 people, about a quarter of its population, and destroying the city's ancient adobe citadel.