Tehran -  Iran has detained an Iranian with a second nationality over alleged links to British intelligence, a prosecutor said Tuesday, the latest in a series of arrests of dual citizens in the country.

The circumstances surrounding the detention were unclear, but hard-liners in Iran’s security forces have increasingly targeted those with foreign ties in the wake of last year’s nuclear deal with world powers.

Speaking to journalists, Tehran prosecutor Abbas Jafari Dolatabadi described the detained individual as being “active in the economic field, related to Iran,” the official IRNA news agency reported. Dolatabadi didn’t elaborate, saying only that the arrest took place last week. He did not identify the individual’s second nationality.

Iranian hard-liners have criticized a planned meeting in September called “Iran Connect 2016,” sponsored in part by Iran’s Ministry of Information and Communications Technology and the British-Iranian Chamber of Commerce. A flier for the event notes it is “strictly prohibited to Iranian individuals and entities that are sanctioned by the U.K. government and/or the EU.”... Read More: VIN