Bojnourd, North Khorassan Prov, Oct 7, IRNA-An earthquake measuring 3.5 on the Richter scale hit the city of Jajarm in North Khorassan province early Saturday for the third time.

According to the seismological base of the Geophysics Institute of Tehran University, the quake was registered at 04:20 hours local time (0050 GMT).

The report moreover said that the tremor was epicentered in an area measuring 56.63 degrees in longitude and 36.83 degrees in latitude.

Two earthquakes measuring 3.8 and 3.6 degrees on the Richter scale had earlier jolted the city Friday night.

The first quake, measuring 3.8 on the Richter scale, was registered at 21:57 hours local time (0627 GMT) while the second quake, with an intensity of 3.6, was registered at 20:59 hours local time (1729 GMT).

Friday's quakes were epicentered in an area measuring 56.44 and 56.37 degrees in longitude and 36.94 and 36.9 degrees in latitude respectively.

With a population of 65,000, Jajarm is located 170km southwest of the provincial capital Bojnourd.

There were no reports of any casualty or damage to property caused by all three quakes.

Iran is often hit by quakes of varying magnitudes as it sits on some of the world's most active seismic faultlines.