The incident at Iran's Natanz nuclear facility could be considered as an "act against humanity," Foreign Ministry spokesman Saeed Khatibzadeh told a news conference on Monday.

"There was no contamination or injuries but it could cause a disaster. It could be considered as an act against humanity," Khatibzadeh said.

Iran has blamed its regional arch-foe Israel for Sunday's incident at the Natanz nuclear site and will take its revenge, state TV quoted Foreign Minister Mohammad Javad Zarif as saying on Monday.

Iran had previously said the incident at its Natanz nuclear enrichment site on Sunday was caused by an act of "nuclear terrorism."

The spokesman for the country's Atomic Energy Organization (AEOI) said on Sunday that a problem with the electrical distribution grid of the Natanz site had caused an incident, Iranian media reported.

The incident took place a day after Tehran launched new advanced uranium enrichment centrifuges at the site. The facility, located in the desert in the central province of Isfahan, is the centerpiece of Iran's uranium enrichment program and is monitored by inspectors of the International Atomic Energy Agency, the UN's nuclear watchdog.

(With input from agencies)