( CNN ) -- Two men who the Iranian government said worked as spies for Israel and the United States were hanged Sunday morning , according to Iranian state news outlet Press TV . The men were identified as Mohammad Heidari and Kourosh Ahmadi . Press TV said Heidari provided classified information to Mossad , the Israeli intelligence agency , and Ahmadi had been convicted of providing the CIA with intelligence . There were no details on when the men were arrested or when they were tried . The hangings occurred at dawn , the report said . Israeli officials did n't comment on the report . The U.S. State Department acknowledged seeing the reports but had no comment . The CIA did n't immediately respond to CNN 's request for comment . The advocacy group Human Rights Activists News Agency , based in Iran , estimated in 2012 that there were 488 hangings in the prior 12 months . About 12 % of those were public executions , the group said , according to a State Department report . One person hanged in 2012 was Majid Jamali Fashi , who was convicted of killing an Iranian scientist . Iran said Israel paid him $ 120,000 to kill elementary-particle physicist Massoud Ali-Mohammadi . Iran also has blamed the United States and the United Kingdom for attacks against nuclear scientists . Iran 's enrichment of uranium has been one of the most contentious issues in nuclear talks between Iran and the so-called P5+1 countries -- the United States , France , Britain , China , Russia and Germany . Iran has denied that it aims to build a nuclear bomb , claiming its nuclear program is for energy and medical use . Iran also holds a former U.S. Marine , Amir Hekmati , who was detained in August 2011 while visiting his grandmother . Iranian authorities accused him of spying for the CIA , a charge his family and the Obama administration deny . Originally he was sentenced to death during a closed-door trial , but that conviction was overturned , and the Arizona native awaits a new trial . CNN 's Michael Schwartz contributed to this report .
Iran says the men were providing classified material to foreign intelligence agencies . There were no comments from Israeli or U.S. officials . One rights group says Iran hanged 488 people in one 12-month period . Iran still holds former U.S. Marine it says was spying for the CIA .