Donald Trump claimed Monday night that Iran executed a nuclear scientist who helped the United States because of emails referring to him on the private email server Hillary Clinton used while secretary of State.

Trump tweeted, “Many people are saying that the Iranians killed the scientist who helped the U.S. because of Hillary Clinton’s hacked emails.”

Many people are saying that the Iranians killed the scientist who helped the U.S. because of Hillary Clinton’s hacked emails.

— Donald J. Trump (@realDonaldTrump) August 8, 2016

{mosads}But journalists immediately began pushing back, labeling Trump’s claim as inaccurate.

Josh Rogin, a columnist for The Washington Post, tweeted and linked to his story, “No, Donald. You are the only one saying it. And you are wrong.” 

Tim Fernholz, a reporter for Quartz, tweeted, “This is wildly false, of course—leaks from CIA officials put Amiri’s work in newspapers around the world.” 

This is an outrageous charge from Trump contradicted by evidence: https://t.co/HXix6cGkFY pic.twitter.com/OUdcSIYsCu

— andrew kaczynski (@BuzzFeedAndrew) August 8, 2016

On Sunday, there were multiple reports that nuclear scientist Shahram Amiri was executed for providing the United States information about Tehran’s nuclear program. He was hanged for treason because he gave “vital information to the enemy.”

That same day, Sen. Tom Cotton (R-Ark.) called Clinton “reckless” and cited her emails that included references to the nuclear scientist.

“I’m not going to comment on what he may or may not have done for the United States government, but in the emails that were on Hillary Clinton’s private server, there were conversations among her senior advisers about this gentleman,” Cotton said on CBS’s “Face The Nation.”