Iran says the Americans were providing classified material to foreign intelligence agencies . There were no comments from Israeli or U.S. officials . One Iranian group says Iran hanged three people in one 12-month period . CNN 's Michael Schwartz contributed to this report . Iran still holds former US Marine it says was working for the US .
Iran says the Americans were providing classified material to foreign intelligence agencies . There were no comments from Israeli or U.S. officials . One Iranian group says Iran hanged three people in one 12-month period . Iran still holds former US Marine it says was working for the US .