Story highlights Clinton received emails mentioning Amiri on her controversial personal email server

Trump and other Republicans have criticized Clinton's actions

Washington (CNN) The execution of an Iranian nuclear scientist accused of spying for the US is reverberating from Tehran to the presidential campaign trail.

Critics, including opponent Donald Trump, are slamming former Secretary of State Hillary Clinton for having received emails mentioning him on her controversial personal email server.

Trump took to Twitter on Monday to link Clinton to Shahram Amiri's death, writing, "Many people are saying that the Iranians killed the scientist who helped the U.S. because of Hillary Clinton's hacked emails."

The emails mentioning Amiri were were part of a tranche released by the State Department last year pursuant to a Freedom of Information Act request in the wake of the revelation that Clinton used a personal server to conduct official business. The FBI has said there is no direct evidence the server was hacked, noting such evidence would be hard to come by.

The Clinton campaign fired back at GOP attacks on Monday, releasing a statement even before Trump's tweet accusing the GOP presidential nominee of using "increasingly desperate rhetoric to attack Hillary Clinton and make absurd accusations because they have no ideas for the American people."

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