At least one person was killed and seven others were injured when a 5.1 magnitude earthquake struck north Iran early Friday (20:18 GMT on Thursday), according to the country's health ministry.
Ministry of Health spokesman Kianush Jahanpur wrote on social media on Friday that a person died in eastern Tehran while trying to escape the quake.
A resident of the Iranian capital told Al Jazeera that the earthquake seemed "very strong".
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Images posted on social media showed people huddled on the streets of Tehran in the middle of the night, while trying to escape the earthquake.
Several aftershocks have been reported.
According United States Geological Survey (USGS), the epicenter of the earthquake was in Damavand, northeast of the capital, at a depth of 10 km (6.2 miles).
Boulders have also been seen blocking the road leading to the mountainous area of Damavand.