The deputy head of Iran’s Seismology and Earthquake Institute says the recent earthquake in Varamin was too weak to activate Tehran’s fault lines.

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IRNA reports that Mohammad Tatar said on Saturday August 15 that the earthquake that shook Varamin on Thursday was most probably on the Pishva Fault line, which is an active and independent fault line and cannot affect the fault line passing through Tehran.

He added that the Pishva fault line is 60 kilometres from Tehran fault lines, and if a fault line is to affect a neighbouring fault line, it needs to exceed 6.5 on the Richter scale.

On Thursday night, an earthquake measuring 4.1 on the Richter scale shook the border regions of Semnan and Tehran Provinces. The Red Crescent Rescue Organization announced that Tehran is now on alert.

Tehran is located on 12 major and a number of minor fault lines, making it prone to possible catastrophic earthquakes.