UPDATED 16:44 PM EST, December 13, 2012
The departments of State and Treasury say they're punishing seven more companies and five more people by freezing any assets they may have in U.S. jurisdictions and barring Americans from doing business with them.
The Treasury says they were targeted because they provide the Iranian government with "unique goods, technology and services" related to the program.
The penalties apply to the procurement arms of the Atomic Energy Organization of Iran and the Iran Centrifuge Technology Company, along with top executives.
