At least six people have been killed and hundreds more injured in an earthquake in north-western Iran, officials say.
The 5.9-magnitude tremor struck in the early hours of Friday in East Azerbaijan province, Iran’s Seismological Center said.
Most of the injuries were caused by crowd stampedes, state-run TV reports.
Iran sits on two major tectonic plates and is prone to frequent seismic activity.
In 2003, a 6.6-magnitude earthquake destroyed the historic city of Bam in the south-east of the country, killing 26,000 people.
More recently, in 2017, a magnitude 7 earthquake hit the Iran-Iraq border region, killing 600 people and injuring more than 9,000.
What happened with the latest quake?
It struck near the town of Tark, some 400km (250 miles) north-west of the capital Tehran, at 02:17 local time (22:47 GMT).
“Rescue teams and helicopters have been dispatched to the quake-hit areas and hospitals are on full alert to help injured people. Unfortunately six people were killed and 345 injured,” Iran’s emergency medical services chief, Pirhossein Kolivand, told state TV.
State-run IRINN TV said most of the injuries were due to overcrowding as people rushed out of their homes and into the streets in panic.
Up to 30 homes were destroyed near the epicentre, it added. More than 60 aftershocks have been reported.
According to the US Geological Survey, the epicentre of the earthquake was at a depth of 10km, although Iran’s Seismological Center said it was at a depth of 8km. Shallower earthquakes are more likely to cause greater damage.
Tremors were reportedly felt as far away as Tehran.