Iran says scientist provided information on CIA

 A semiofficial news agency is quoting an "informed source" as claiming that an Iranian nuclear scientist who returned home last week from the United States provided "very valuable" information" about the Central Intelligence Agency, the CIA.
American authorities have claimed that Shahram Amiri willingly defected to the U.S. but changed his mind and decided to return home without the $5 million he had been paid for what a US official described as "significant" information about his country's disputed nuclear program.
The unidentified source is quoted by Fars news agency as saying Iran's intelligence agents were in touch with Amiri while he was in the US and that they won an intelligence battle against the CIA.