Iran Press/Iran news: "An under-construction building near the Natanz nuclear power plant was damaged in the incident," Behrouz Kamalvandi said.
"There were no casualties or damages and the site is operating as usual,” he added.
According to the spokesman, a team of experts is assembled to investigate the cause of the incident.
Natanz is a uranium enrichment center located in the city of the same name in Esfahan Province, some 250 kilometers south of the capital, Tehran. 101
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