Iran said a fire that broke out at its Natanz nuclear facility last week had caused “significant damage” to a building that was used to develop advanced centrifuges. A number of “measuring devices and advanced tools” were destroyed in the July 2 blaze, and work has already started on reconstructing the building with “more advanced equipment and a bigger site,” Behrouz Kamalvandi, spokesman for the Atomic Energy Agency of Iran, told the state-run Islamic Republic News Agency.

The fire at Natanz came the same week as two explosions in Tehran province, including one near the Parchin military base and another at a medical clinic which killed 19 people.