A 7.3-magnitude quake has rocked the northern region of Iran and Iraq, killing at least 221 people and injuring more than 5,660.
one aid agency stated 70,000 people had shelter one of the largest this year, after the quake.
At least 207 were in Iran Kermanshah state.
Seven people died in Iraq, where people fled in the streets in the capital, Baghdad.
Mosques in the city have been broadcasting prayers.
"I had been sitting with my children with dinner, and suddenly the building was just dancing in the air," a Baghdad mother-of-three, Majida Ameer, told Reuters news agency.
"I believed initially that it was a huge bomb. But then I heard everyone around me screaming: 'Earthquake!'"
Iranian news agencies as saying, 5,341 people, Isna and Khabar quoted ministry of health officials had been hurt in Iran.
Most of the sufferers were in Sarpol-e Zahab, about 15km from the boundary, Iran's emergency services leader, Pir Hossein Koolivand was quoted as stating on Iranian state television channel Irinn.
The town's most important hospital was damaged, which makes it unable to treat countless wounded, state TV reported.
Many homes in the mountainous area are made from mud bricks and are at risk of collapse at an earthquake like the one that struck on Sunday.
Damage has been reported in at least eight villages, Morteza Salim, the head of Iran's Red Crescent Organisation, told the station.
"Some other cities have suffered power cuts, and their telecommunications program has also been upset," he explained.
Landslides were hampering rescue teams, Mr. Koolivand said.
On the other hand, the most extensive damage was in the town of Darbandikhan, 75km (47 miles) east of the town of Sulaymaniyah in the Kurdistan Region.
"The situation there is very crucial," Kurdish Health Minister Rekawt Hama Rasheed told Reuters.
The ministry of health said 321 individuals had been wounded in the Iraqi Kurdistan region.
The Rami Ruhayem, in the funding Irbil of the BBC, said shaking there lasted for at least a moment.
"For a few of seconds it was barely detectable, I wasn't sure whether it was a minor tremor or just my imagination," he explained. "But soon enough it was unmistakable as the building began swaying from side to side."
The quake hit at 21:18 local time (18:18 GMT) approximately 19 miles (30km) southwest of Halabja, near the northeastern border with Iran, the US Geological Survey (USGS) said.
It occurred at a moderately shallow depth of 23.2 km, and tremors were felt in Turkey, Israel, and Kuwait.
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