UN nuclear watchdog says Tehran is enriching uranium at its underground Fordo facility, a move prohibited by 2015 nuclear deal, adding "uranium particles" were detected at a separate site.
Iran cancelled a UN inspector's accreditation after she triggered an alarm at a uranium enrichment plant.
President Hassan Rouhani says Tehran will continue to reduce its nuclear commitments until European parties to the pact save it by protecting Iran's economy from US penalties.
Iran's uranium enrichment level has passed 4.5 percent, exceeding the cap set by the 2015 nuclear deal.
Iranian President Hasan Rouhani declares that Iran will no longer honour the terms of its nuclear research and development programme, following previous violations of the 2015 nuclear deal.
Iran has exceeded the upper limit of its low-enriched uranium reserves for the first time after the US withdrew from the accord last year. The UN's atomic watchdog also confirmed the breach in a report.
Last week, Iran notified China, France, Germany, Russia and the UK of its decision to halt some commitments under the 2015 nuclear deal, a year after the US unilaterally withdrew from the accord and re-imposed sanctions.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2020 TRT World.