Iranian President Hassan Rouhani has an investigation into why government housing built by his predecessor collapsed while others withstood the powerful natural disaster.
The country marked a day of mourning for those killed in the 7.3-magnitude quake that struck a mountainous region spanning the Iran-Iraq border late on Sunday.
I was informed with a deep sorrow about dozens of casualties and destructions caused by the devastating natural disaster in the Iranian province of Kermanshah.
The headline of a state newspaper read "Iran cries with Kermanshah", referring to the Kurdish-majority province.
The Turkish Red Crescent has sent assistance including 33 aid trucks, 3,000 tents and heaters, 10,000 beds and blankets and food to Sulaymaniyah, and the military has dispatched a cargo plane of aid.
"It is cold. My children are freezing. They are holding on to their parents to warm themselves - it's pretty bad", he complained.
Mr Gulani said there were an average of three strong aftershocks an hour, provoking panic.
Less than 48 hours after the natural disaster hit Iraq and Iran, authorities in Iran have called off rescue efforts, saying there's little chance of finding survivors in the country's quake-prone western region. Instead, people were having to trek to the other side of town to get water from a tank. "We are homeless. We are alone in this world", a weeping Maryam Ahang, who lost 10 members of her family in the hardest hit town of Sarpol-e Zahab, told Reuters by telephone.
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Johnston said the school had been cleared by 10 a.m. but he did not have any information about the victims there. Students at Rancho Tehama Elementary are being evacuated to the Rancho Tehama Recreation Hall.
One aid agency said 70,000 people needed shelter and the United Nations said it was "ready to assist if required".
Rescuers used backhoes and other heavy equipment to dig through toppled buildings in Sarpol-e-Zahab, home to more than half of the dead. "Our engineers?" He said the government would hold accountable anyone found not to have upheld building standards. Survivors desperately needed tents with elderly people and babies as young as a one-year-old sleeping in the cold for two straight nights.
Mansoureh Bagheri, an Iran-based official with the Red Crescent Society, told the BBC about 12,000 residential buildings had "totally collapsed".
"On behalf of the Armenian government and personally myself I would like to extend our deepest condolences to you and the good people of Iran expressing our readiness to be involved in rescue operations".
The head of the Revolutionary Guards, Major General Mohammad Ali Jafari, said the immediate need was for tents, water and food.
He added that "psychological support teams" had been sent to these areas.
Search and rescue operations are nearly complete while relief operations could take months, Mansoureh Bagheri, director of global operations at the Iranian Red Crescent, told CNN on Tuesday.
The report Tuesday afternoon by the IRNA news agency said the number of injured in the temblor now stood at 7,460.