Iran said on Monday that it had arrested 17 Iranian citizens on charges of spying for the United States and had already executed some of them, Iranian and Western news media reported.
At a news conference in Tehran, an official who identified himself as a director of counterespionage in the Intelligence Ministry described the arrests of people he said had been trained by the C.I.A., but he did not name them and gave few details of their alleged spying. The official declined to give his name, The Associated Press reported, and did not say how many of those arrested had been killed.
Iran has previously claimed, without elaboration or supporting evidence, to have broken up American spy rings. It made similar announcements in April and again in June this year.
The latest claim comes at a moment of rising tensions between Iran and the West.
Tehran and Washington are in a showdown over President Trump’s withdrawal from the 2015 nuclear accord that Iran signed with several international powers and over his imposition of sweeping new sanctions in an attempt to force Tehran to negotiate a new agreement. In response, Iran has ramped up its nuclear program in recent months, exceeding limits imposed by the deal.