Bam, Kerman Prov, April 20, IRNA -- A four-Richter quake hit southeastern historical city of Bam at 07:11 (03:41 GMT) hours local time on Tuesday.
Yazd Geophysics Center said the quake lasted for about seven seconds, shattering the half-devastated walls and buildings in the city, hit by a 6.3-Richter quake in December.
The December quake ruined more than 70 percent of the city, leaving tens of thousand of people killed or injured.
The locals are reportedly strongly concerned over eruption of a quake similar to the December one.
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