There were no immediate reports of casualties or major damage.

Thursday evening's quake hit the town of Jahrom in Fars province at 11:01 pm (1831 GMT), while Friday's temblor struck between the towns of Khormouj and Tangestan in Bushehr province at 11:27 am (0653 GMT).

On August 21, a strong quake measuring 5.7 on the Richter scale rocked the southeastern Iranian city of Bam resulting in damage to several villages, but no casualties.

Earthquakes are frequent in Iran. Some 950 have hit the country since 1991, killing about 17,600 people and injuring another 53,500, according to Iranian figures.

On July 11, two successive earthquakes measuring 5.6 and 5.8 killed one person and injured 25 in southern Iran.

TERRA.WIRE