Iranian atomic energy organization says Tehran 'obliged to intensify security measures' by shifting some machinery to Natanz, which was also a target of reported Israeli attacks

Building second, third units at Bushehr would be in accordance with Islamic Republic's plans to produce at least 10,000 megawatts of electricity using nuclear energy, Tehran says

Blast occurred in the nuclear enrichment facility's electricity distribution center, according to Iranian atomic agency spokesman, who vows 'revenge on the Zionist regime'

Top Israeli officials hint at, but do not confirm, Mossad involvement in apparent cyberattack on uranium enrichment facility, which Tehran calls an act of 'nuclear terrorism'

Alleged Israeli cyberattack said to strike serious blow to Iranian atomic program; security cabinet to meet next week to discuss recent exchanges with Tehran

Israeli outlets say blackout at Iran's Natanz plant a likely Israeli cyberattack; Western intelligence sources estimate it shut down entire sections of the facility

Iranian nuclear agency says 'cold test' will be held to check fluid and support systems startup ahead of plant's full commissioning later in the year

Separately, Tehran's Atomic Energy Organization spokesman says response to attack must be twofold: increasing uranium production and targeting those responsible

Atomic organization spokesperson says security services now have full knowledge of what happened at Natanz facility in July

Spokesperson tells state TV that security officials will 'reveal in due time' the cause of the explosion at the nuclear site