The seismological base of Tehran University's Geophysics Institute registered the tremor at 22:42 local time.
An earlier quake, measuring 3.9 degrees on the Richter scale, jolted the suburbs of the city on Friday at 20:12 local time.
There were no immediate reports of any casualties or damage to property caused by these quakes.
Iran is situated on some of the world's most active seismic faultlines and quakes of varying magnitudes are usual occurrences.
... Payvand News - 03/25/16 ... --