A strong, magnitude 6.2 earthquake jolted a sparsely populated mountainous province near Iran's border with Iraq on Monday, Iranian state television reported.
There were no reports of fatalities but a local official said some 60 people have been injured and that the temblor had caused widespread damage.
The TV said the quake hit the town of Murmuri, about 500 kilometres southwest of the capital, Tehran, at 7:02 local time. It said the 6.2-magnitude quake happened at the depth of 10 kilometres. Earlier, the TV had put the quakes magnitude at 6.1 but didn't explain the discrepancy.
Mohammad Reza Morvarid, the local governor, said 60 people were injured and that because minor quakes were felt in the area on Sunday, the residents were somewhat prepared.
"Many people slept outdoors," Morvarid said, adding that "many buildings have been damaged."
Monday's quake was also felt in neighbouring provinces.
Iran sits on a series of seismic fault lines and experiences one slight quake a day on average. In 2003, some 26,000 people were killed by a magnitude 6.6 quake that flattened the historic southeastern city of Bam.