A nuclear facility in Iran was hit by a "terrorist act" a day after it unveiled new advanced uranium centrifuges, a top nuclear official says.
Centrifuges are needed to produce enriched uranium, which can be used to make reactor fuel - but also material for nuclear weapons.
It represented another breach of the country's undertakings in the 2015 deal, which only permits Iran to produce and store limited quantities of enriched uranium to be used to produce fuel for commercial nuclear power plants.
On Sunday, a spokesman for the Atomic Energy Organisation of Iran (AEOI), Behrouz Kamalvandi, said an "incident" had occurred in the morning involving the nuclear facility's power network.
"Condemning this despicable move, the Islamic Republic of Iran emphasises the need for the international community and the International Atomic Energy Agency [IAEA] to deal with this nuclear terrorism," he was quoted as saying.
Ron Ben-Yishai, a defence analyst at the Ynet news website, said that with Iran progressing towards nuclear weapons capability it was "reasonable to assume that the problem...
The Iranian nuclear deal, known as the Joint Comprehensive Plan of Action (JCPOA), has been in intensive care since Donald Trump pulled the US out of it.
The nuclear deal only allows Iran to produce and store limited quantities of uranium enriched up to 3.67% concentration.
Uranium enriched to 90% or more can be used to make nuclear weapons.
Mr Trump said the accord was based on "a giant fiction that a murderous regime desired only a peaceful nuclear energy programme" and reinstated crippling economic sanctions in an attempt to compel Iran to negotiate a replacement.
US joins talks aimed at reviving Iran nuclear deal.
'Terrorist act' at Iranian nuclear facility.
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