Iran's state TV is reporting that a 6.1 magnitude earthquake has jolted a town in the country's south.
The Tuesday report by the English-language channel Press TV says the earthquake struck Khormooj some 80 kilometers southeast of Bushehr, the home of Iran's first nuclear power plant.
There were no immediate reports of casualties or damage.
Another report by semi-official Fars news agency says fearful residents poured into the streets.
The quake was felt across the Gulf in Bahrain and Qatar, where workers were evacuated from high-rise buildings as a precaution.
Earlier on Sunday a lighter earthquake jolted Khormooj. Iran is located on seismic faults and it experiences daily light earthquakes.
In 2003, some 26,000 people were killed by a 6.6 magnitude quake that flattened the historic southeastern city of Bam.
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