‘Accident’ at Iran’s Natanz nuclear facility – video

Iran announced on Saturday that it had started up advanced uranium enrichment centrifuges at Natanz, in breach of its undertakings under a 2015 nuclear deal and days after the start of talks on rescuing the accord. The following day a spokesperson for Iran's civilian nuclear programme said an 'accident' had happened at the facility's electrical distribution grid. Behrouz Kamalvandi says the reason for the loss in power is unknown and will be investigated but there were no injuries and no contamination

• 'Accident' at Iran's Natanz nuclear plant as enrichment starts