Iran on Tuesday announced it is installing new centrifuges with "better quality and speed" to enrich uranium in its nuclear facilities, Iranian officials say.
"The installation of new centrifuges with better quality and speed is ongoing. We have announced it and the agency (UN atomic watchdog) has full supervision on them," Iranian foreign minister Ramin Mehmanparast told reporters during his weekly press conference.
The move defies international demands Iran it halt its atomic activities and underscores Western fears Iran is seeking to enrich its uranium stores to weapon-grade quality.
Iran previously moved its uranium enrichment facilities to an underground facility near Qom.
Officials from the International Atomic Energy Agency have complained Iran has obstructed their attempts to inspect its facilities under the nuclear non-proliferation treaty, to which Iran is a signatory.
IAEA officials previously informed the UN security council that Iran has sought technologies related to nuclear weapons.
Reports of an Iranian nuclear bomb test in 2012 have become more common as Iran races ahead with enrichment. Also, a website affiliated with Iran's Revolutionary Guard ran an article fantasizing about the world's reaction to an Iranian nuclear test.