PHOTO: Reuters
The epicentre of the quake, which struck at 9:23 am (0553 GMT), was near the village of Habash-e Olya, less than 10 kilometres (six miles) from the border, according to the USGS.
It had a depth of six kilometres, according to Tehran University's Seismological Centre.
It caused some damage to buildings and injured at least one person, Mojtaba Khaledi, a spokesman for the country's emergency services, told AFP.
At least 30 dead, 452 injured as earthquake jolts AJK, Punjab
Interior Minister Suleyman Soylu said seven people including three children were killed in eastern Turkey after a 5.7 magnitude earthquake hit neighbouring Iran, the official Anadolu news agency reported.
Five people were injured and taken to hospital, Soylu said, adding that other people were believed to be trapped under the rubble.
"Search and rescue efforts are ongoing," he said.
The epicentre of the quake, which struck at 9:23 am (0553 GMT), was near the Iranian village of Habash-e Olya, less than 10 kilometres (six miles) from the border, according to the USGS.
Anadolu said the quake caused damage in several villages in neighbouring Van province.
The province was struck earlier this month by two avalanches which killed 41 people.
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