MSNBC terrorism analyst Malcolm Nance has deleted a tweet that appeared to call for a terrorist attack against Trump Towers in Istanbul.

“This is my nominee for the first ISIS suicide bombing of a Trump property,” the former intelligence officer tweeted Tuesday afternoon, according to a screenshot circulated online and highlighted by the Washington Free Beacon.

Mr. Nance was responding to a tweet by writer Dustin Giebel, claiming that Mr. Trump’s congratulatory call to Turkish President Recep Tayyip Erdogan for winning Sunday’s referendum was motivated by reasons tied to the property.

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Mr. Nance has since deleted the tweet but has yet to apologize.

The author and counterterrorism expert has made inflammatory remarks about Mr. Trump and the Islamic State terrorist group in the past. Last July, Mr. Nance referred to the then-Republican nominee as the “ISIS candidate.”

“He inflames the passions of people in the West to perform Islamophobia, to draw recruits to them, to make them say, ‘This is what America is,’” he said at the time.

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Mr. Nance also suggested that the San Bernardino terrorist attack may have been “a hybrid act of terrorism/workplace violence,” and that the Pulse nightclub terrorist, Omar Mateen, was motivated by a “psycho sexual problem” rather than ISIS, Newsbusters reported.