The United States is concerned about Tehran producing uranium metal as reported by the UN nuclear watchdog.
The International Atomic Energy Agency (IAEA) has allegedly submitted a new report on Iran, in which it found the country has made progress in its work on enriched uranium metal. The State Department said on Monday that the United States has the report.
"Iran has no credible need to produce uranium metal, which has direct relevance to nuclear weapons development," US State Department spokesperson Ned Price said in a statement.
Uranium metal can be used to build the core of a nuclear bomb.
"Iran should cease its nuclear escalations and return to negotiations toward full implementation" of the 2015 nuclear agreement, he said.