An Iranian army soldier on Wednesday inspects a smashed car by the debris of an earthquake damaged building that was built under the Mehr state-owned program in western Iran.

SARPOL-E-ZAHAB, Iran — In a western Iranian town devastated by this week’s powerful earthquake, families were sleeping on the rubble of their homes Wednesday, saying authorities haven’t delivered enough tents ahead of the fast-approaching winter.

Icy rains will be coming soon to Sarpol-e-Zahab, hard hit by Sunday’s 7.3 magnitude earthquake, which killed more than 530 people and injured thousands. Survivors in other towns and villages nestled in the Zagros Mountains face the same tough conditions, still awaiting badly needed aid three days later.

Iranian officials from Supreme Leader Ayatollah Ali Khamenei on down have urged quick distribution of supplies and relief material. Logistical problems, alleged theft and other issues have plagued the response to the disaster in one of Iran’s predominantly Kurdish regions.

“Our things are still in the house under the rubble, but nobody dares go and take them,” survivor Shahla Rezaei said. “We went inside to grab children’s school books and some other things but an aftershock hit and we had to escape.”

Public order broke down in many areas as aid came in, with families not affected by the quake carting off aid intended for survivors, according to officials, who say police have been deployed to prevent further siphoning.

Many in the Kurdish town of Sarpol-e-Zahab, home to half the casualties from the temblor, told The Associated Press they have not received aid and they need help to remove debris so they can retrieve essential belongings.

Reports said more than 12,000 tents were distributed in the area, though more than 30,000 houses were affected by the quake — 15,500 of them completely destroyed. That forced some residents to construct reed huts.

Parastou Rezaei, a survivor and a mother of two, thanked those from other towns who came to give people blankets. “We do not have enough tents,” Rezaei said. “We have to make fire outside the tents at night and keep putting wood in it until morning to protect us from the cold.”

Newly constructed government housing in the region, which was devastated by Iran’s 1980s war with Iraq, collapsed. That’s raised questions about that housing project, known as “Mehr” or “kindness” in Farsi, which was a cornerstone of hard-line former President Mahmoud Ahmadinejad’s populist appeal.

The temblor hit about 19 miles outside the eastern Iraqi city of Halabja, according to the U.S. Geological Survey. In Iraq, nine people were killed and 550 were injured, according to the United Nations.