Donald Trump Jr. promoted a Twitter exchange on Friday that smeared Jamal Khashoggi, the Saudi journalist and Washington Post columnist who disappeared in the Saudi consulate in Turkey earlier this month, as an ally of “jihadists.”

Turkish officials say they have evidence that Khashoggi was murdered by a group of Saudis who arrived by plane the morning of his disappearance. The growing likelihood that a U.S. resident was murdered inside the consulate of a purported ally has caused a major international crisis for Saudi Arabia and its powerful crown prince, Mohammed bin Salman.

The president’s son retweeted an exchange between Patrick Poole, a terrorism correspondent for the conservative website PJ Media, and Sean Davis, co-founder of The Federalist, a conservative news site.

On Friday morning, Poole tweeted an image of a 1988 news article with Khashoggi’s byline that identifies the journalist holding a rocket-propelled grenade in a photo with mujahedeen in Afghanistan. The article has been cited in a book on Osama Bin Laden by CNN national security analyst Peter Bergen and another book on wars in Afghanistan by researcher Barnett R. Rubin, suggesting it is authentic.