Western intelligence agencies and U.N. inspectors suspect Iran is planning to build more nuclear sites despite international demands that it open up its operations for inspection, The New York Times reported. Comments recently made by a top Iranian official reportedly prompted inspectors to search for at least two more sites.

Ali Akbar Salehi, the head of Iran’s Atomic Energy Organization, said in an interview with the Iranian Student News Agency that President Mahmoud Ahmadinejad ordered building to begin promptly on two new plants inside mountains.

"God willing," Salehi told the News Agency, "we may start the construction of two new enrichment sites" in the Iranian new year, which began March 21.

The Times reported that U.S. officials are also suspicious of continued nuclear building by Iran and are examining satellite evidence about a number of suspected sites in the country. They have not yet determined the sites are being used to produce nuclear fuel.

Last September, President Obama revealed the evidence of a hidden Iranian nuclear site at Qum.