TEHRAN, Iran -- Iran has confirmed that a damaged building at the underground Natanz nuclear site was a new centrifuge assembly center.
The official IRNA news agency quoted a spokesman for Iran’s nuclear agency making the announcement on Sunday.
The spokesman says work began on the centrifuge assembly center in 2013, and it was inaugurated in 2018.
Iranian officials had sought to downplay Thursday's fire, saying it struck an under-construction “shed.”
Iran began experimenting with advanced centrifuge models in the wake of the U.S. unilaterally withdrawing from Tehran's nuclear deal with world powers two years ago.
Iran has long maintained its atomic program is for peaceful purposes.