The Seismological center of the Hormozgan province affiliated to the Geophysics Institute of Tehran University registered the quake at 06:39 hours local time (0309 GMT).
The epicenter of the quake was located in an area 55.7 degrees in longitude and 26.5 degrees in latitude.
Iran sits astride several major faults in the earth's crust, and is prone to frequent earthquakes, many of which have been devastating.
The worst in recent times hit Bam in southeastern Kerman province in December 2003, killing 31,000 people - about a quarter of its population - and destroying the city's ancient mud-built citadel.
The deadliest quake in the country was in June 1990 and measured 7.7 on the Richter scale. About 37,000 people were killed and more than 100,000 injured in the northwestern provinces of Gilan and Zanjan. It devastated 27 towns and about 1,870 villages.
In August, two quakes in Northwestern Iran also claimed the lives of 306 people and injured more than 4500 others.
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An earthquake measuring 3.2 on the Richter scale struck Souza city in Hormozgan province, Southern Iran, on Thursday morning.
News ID 184344
