Tehran: An earthquake measuring 5.8 on the Richter scale struck Iran's Khorasan-e Razavi province near the border with Afghanistan on Wednesday, with no immediate report of casualties or damage.
The tremor hit the town of Sangan, in Khaf county, at a shallow depth of 8 km at 7.59 a.m., Press TV reported.
Hojjatali Shayanfar, director general of the provincial emergency department, said: "We have not received any reports of casualties, but a large area has been affected, which our survey teams are investigating."
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However, he added, there has been damage to livestock storage units because the quake-hit area is home to the nomadic population.
Aid workers have been deployed to the affected region.
Another earthquake of magnitude 4.5 earthquake rattled an area less than 50 kilometres (30 miles) from Iran's Bushehr nuclear power plant near the country's Gulf coast, a US monitor said.
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The quake, which had a depth of 10 kilometres, struck 17 kilometres south-southeast of Borazjan city at 6:49 am (0319 GMT), the US Geological Survey said on its website.
State news agency IRNA said the earthquake was felt in Bushehr, site of the country's sole nuclear power plant.