Iranian authorities temporarily detained an inspector from the United Nations International Atomic Energy Agency and seized her travel documents last week, according to a report by the Reuters news agency.
The incident took place at the Natanz nuclear enrichment facility, diplomats told the news agency on Wednesday.
The IAEA’s 35-nation Board of Governors has been convened to meet Thursday to discuss the incident, according to the report.
No explanation was provided by Iran for the detention, and the IAEA did not make any public statement about the incident.
Iran has begun to inject uranium gas into advanced centrifuges at the underground nuclear facility at Fordow, according to Tehran’s Atomic Energy Organization spokesperson Behrouz Kamalvandi.
The spokesperson told Iranian state television that the AEO delivered 2,000 kilos of UF6 (uranium) to the Fordow plant on Wednesday under the supervision of United Nations International Atomic Energy Agency (IAEA) inspectors, adding that the centrifuges will enrich the uranium “up to 4.5 percent level.”