Liputan6.com, Jakarta - Iran was rocked by a magnitude 4.3 earthquake on Tuesday, March 3, 2026.
The tremor was centered in the Gerash region of Fars Province, southern Iran, at a shallow depth of approximately 10 kilometers below the earth's surface, as reported by Al Arabiya English.
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This seismic event happened during a tense geopolitical situation, with Iran facing intensified military attacks from the United States (US) and Israel.
To date, there have been no immediate reports of significant damage or casualties resulting from the earthquake.
However, the tremor, which was classified as mild to moderate, sparked speculation, particularly on social media, about a possible secret nuclear test by Iran.
However, geologists and scientific organizations quickly dismissed this speculation, asserting that the earthquake was a normal natural phenomenon in this seismically active region.
Earthquake in Iran's Active Seismic Zone
The 4.3 magnitude earthquake that struck Gerash, Fars Province, southern Iran, on March 3, 2026, was centered near Khonj, approximately 55 kilometers northwest of Gerash.
The US Geological Survey (USGS) reported that the earthquake had a shallow depth of approximately 10 kilometers (6.21 miles) below the Earth's surface.
Earthquakes of this magnitude are generally classified as mild to moderate, likely felt by residents in the surrounding area but rarely causing severe damage.
Southern Iran is known as a highly seismically active zone, located in the Zagros seismic belt.
Frequent earthquake activity in this region is caused by movement and stress along major faults caused by the collision of the Arabian and Eurasian plates.
Therefore, earthquakes are common and part of the natural tectonic activity in the region.
Iran Hit by Military Strikes Amid Regional Conflict
This earthquake happened amid a significant escalation in military tensions, with Iran facing ongoing attacks from the United States and Israel.
This massive offensive has been underway since Saturday, February 28, 2026, primarily targeting Iranian military sites.
Intensive airstrikes reportedly targeted an airbase in Kerman, approximately 800 kilometers southeast of Tehran, resulting in the deaths of at least 13 Iranian soldiers.
In response, Iran launched retaliatory missile and drone attacks on various targets in Israel and US military bases in the Gulf region.
The Tehran government claimed hundreds of US troops were killed in the retaliatory attacks, and at least 555 people were killed in the wave of attacks.
Iran also claimed to have launched a Fattah-2 hypersonic missile in retaliation for the US-Israeli attacks.
Nuclear Test Speculation and Scientific Clarification
Although this 4.3 magnitude earthquake is a common natural tectonic event in Iran, it sparked speculation on social media about a possible secret nuclear test by Iran.
According to News24, the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), for example, has said that the pattern of seismic waves produced by nuclear tests is distinct and unlike those produced by natural quakes.
Also, experts and scientific organizations emphasized that there is no scientific evidence to confirm a link between the earthquake and nuclear activity.
Zee News quoted the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) and the Berkeley Seismology Lab as saying that the ‘fingerprints’ between a nuclear test and a natural earthquake are completely different.