This one measured 6.3 and had an epicenter 32 kilometers (20 miles) west-southwest of Ahar.

CNN: More than 300 killed, 3,000 injured in Iran earthquakes

The quakes struck near Tabriz and Ahar, but most of the casualties are thought to be in outlying villages.

BBC: Iran earthquakes leave scores dead in Tabriz region

The Red Crescent's Faqih said 230 villages in the Varzaqan, Haris and Ahar regions suffered 70% to 100% damage.

CNN: More than 300 killed, 3,000 injured in Iran earthquakes

Khalil Saei, the provincial director of crisis management, told the state-run Islamic Republic News Agency that the cities of Ahar and Varzaqan were the hardest hit.

CNN: More than 300 killed, 3,000 injured in Iran earthquakes

The first earthquake, with a magnitude of 6.4, hit Saturday at 4:53 p.m. local time, according to the U.S. Geological Survey, which said the epicenter was 23 kilometers (14 miles) southwest of Ahar.

CNN: More than 300 killed, 3,000 injured in Iran earthquakes