By Borzou Daragahi, Los Angeles Times, May 22, 2011

Reporting from Beirut—

Iran declared Saturday that it had uncovered and dismantled what it called a U.S. "espionage and sabotage network" and arrested 30 people allegedly spying for the CIA.  Tehran claimed that it also had identified and exposed 42 others in connection with the suspected U.S. spy network, according to a widely disseminated statement by the Ministry of Intelligence and Security.

The statement alleged that the network was run by CIA agents via U.S. embassies in the United Arab Emirates, Turkey and Malaysia and sought to "gather information from scientific, research and academic centers …

On how it may be related to anti-Ahmadinejad doings, also see:

Iran Uncovers Spy Network – Intelligence Ministry
By Nader Uskowi, Uskowi on Iran, May 21, 2011

Iran's Intelligence Ministry announced today that it has arrested at least 30 people allegedly linked to a spy network in the country. In a statement read on state-run TV, the intelligence agency claimed that [....]

The announcement of the uncovering of the spy network coincides with claims by the extremist elements in anti-Ahmadinejad camp that people close to the president might be working for foreign powers, and an ultra-conservative publication called for the arrest of Esfandiar Rahim Mashaie, Ahmadinejad’s chief of staff and his political confidant.