A fire that damaged a building used for producing centrifuges at Iranian Natanz nuclear site was sparked by Israel, a Middle Eastern intelligence official told the New York Times.

"A Middle Eastern intelligence official said Israel planted a bomb in a building where advanced centrifuges were being developed," the article noted.

According to the newspaper, a member of the Islamic Revolutionary Guards Corps also said an explosive was used.

The NY Times said it cannot verify allegations of Israeli involvement in the incident, while the Israeli officials were obscure on Sunday when asked about the possibility of involvement in an attack on Natanz.