An earthquake measuring five on the Richter scale jolted Naghan city in Iran's south eastern province of Chaharmahal and Bakhtiari March 31.
The tremors occurred at 11:45 local time (GMT +4:30 hours), according to a report from the seismography center affiliated with Tehran University Geophysics Institute.
The earthquake's epicenter was located in an area 50.83 degrees in longitude and 31.93 degrees in latitude at a depth of 10 kilometers underground, the country's state-run IRINN TV reported.
There was no immediate report on possible casualties or damage. The rescue forces were dispatched to the scene.
In 1977 an earthquake of six magnitudes hit Naghan, killing 348 people, injuring about 200, and causing destruction over an area of 150 square kilometers.
Iran sits astride several major faults in the earth's crust and is prone to frequent earthquakes, many of which have been devastating.
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 north-western provinces of Gilan and Zanjan. Nearly 27 towns and 1,870 villages were devastated.