The International Atomic Energy Agency says Iran has produced a gas needed for uranium enrichment. A former U.N. weapons inspector says Iran has produced enough of this nuclear material to fuel an atomic weapon.
The agency's findings are part of a confidential report obtained by news agencies Friday.
The U.N. nuclear watchdog said Iran's nuclear plant in Isfahan has processed about seven tons of uranium hexaflouride gas since resuming work in early August. That gas can be turned into the key ingredient for a nuclear bomb.
The report said even after two years of U.N. investigation, Iran failed to answer important questions about its secret nuclear activity.
Iran says its nuclear program is a peaceful effort to generate electricity, but critics fear Tehran is secretly working on nuclear weapons.
Some information for this report provided by AP, AFP and Reuters.