Iran has denied allegations that it has a secret nuclear weapons facility.

Iranian officials say the claim by the opposition National Council of Resistance of Iran is a lie. They say the group is trying to negate the progress Iran recently made with European negotiators by agreeing to suspend uranium enrichment.

Tehran says the facility in question is only used to generate electricity.

Meanwhile, the Washington Post  is reporting that U.S. Secretary of State Colin Powell's claim that Iran could be developing nuclear-capable missiles was based on intelligence that was classified and based on what it called an "unvetted, single source."

Mr. Powell said Wednesday that intelligence indicates Iran is trying to modify its missiles to carry nuclear warheads, but did not elaborate.

Some information for this report provided by AFP.