The apartment complexes sit next to lush pastures in the nearly entirely Kurdish province of Kermanshah, nestled in the Zagros Mountains along the border with Iraq.
However, Iranian officials said there were no longer any likelihood of finding survivors and called the rescue off.
The quake was centred near the border of Iraq and Iran, and was felt for hundreds of kilometres.
He pledged the "government will definitely follow up on these issues and identify the culprits".
Numerous damaged buildings were built during former hard-line President Mahmoud Ahmadinejad administration, though some of them were completed and handed over to the residents under Rouhani. Many warned that the low-quality construction could be problematic.
Nota de Pesar do Presidente da RTA pelo falecimento de Cabrita Neto
Durante cerca de uma década, entre 1985 e 1995, foi governador civil de Faro. Eu, como todos os algarvios, conheci o Cabrita Neto desde sempre.
He says he appreciates foreign countries for expressing sympathy with victims of Sunday's temblor, which measured magnitude 7.3.
The magnitude 7.3 quake was centered 19 miles (31 kilometers) outside the eastern Iraqi city of Halabja, according to the most recent measurements from the U.S. Geological Survey.
Iran's Olympic weightlifting champion Kianoush Rostami has put his gold medal up for auction to raise money for the victims of Sunday's natural disaster which left at least 452 people dead in Iran and Iraq.
Iran sits on a major fault line between the Arabian and Eurasian plates and has experienced a number of earthquakes in the past.
Rescuers used backhoes and other heavy equipment to dig through toppled buildings in Sarpol-e-Zahab, home to more than half of the dead.
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Searchers used dogs to comb the debris - just as they have since Iran's 2003 quake in Bam that killed 26,000 people.
The quake badly damaged the town's hospital, forcing the army to set up field clinics.
Residents fled without time to grab their possessions as apartment complexes collapsed into rubble.
Residents on Monday dug frantically through wrecked buildings for survivors.
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UCLA's trip coincided with Trump's two-day state visit to the Chinese capital, Beijing, as part of his 13-day trip to Asia. Scott thanked Trump, the White House and the State Department for their assistance in resolving the case.