The seismological base affiliated to the Geophysics Institute of Tehran University recorded it at 18:27 local time (1357 GMT) in Bam's outskirts.
There has been no immediate reports on possible damages or casualties.
Bam's suburbs had experienced another with a 3.6 magnitude Wednesday.
A killer 6.3-Richter earthquake flattened Bam, once known as the Silk Road City, in the wee hours of Dec 26, 2003, 05:28 local hours (0158 GMT), claiming over 41,000 lives and leaving tens of thousands injured and homeless.
... Payvand News - 6/18/04 ... --