Buckley Carlson took to social media to comment on the antisemitic massacre, insinuating that victims’ injuries were faked and key details were fabricated. He reposed a comment which claimed that “Zionist networks and intelligence staged shooting incidents,” described the attack in Sydney as “theater,” and argued and that the terrorism will become pretext for new speech restrictions regarding antisemitism. The reposted comment also suggested that human rights attorney Arsen Ostrovsky, who was shot in the head during the attack, fabricated his injuries for attention.

“When your ego betrays the Op,” Carlson posted. “‘Get out of the frame, Arsen!'”

“You really are a sick person,” Ostrovsky wrote back.

Carlson retorted, raising additional doubts regarding the legitimacy of the terrorist attack.

“Pretty facile for a ‘head shot’ ‘victim.’ Ambulance didn’t take your phone, before they did the intracranial surgery? Was that a 30.06 round?” Carlson said in response to Ostrovsky.

Carlson also repudiated center-right pundit James Lindsay after he called on followers to “condemn the Carlsons.” Carlson then replied that James should ​”just condemn the lying” while posting a photo of a cover of a book referencing alleged “deception” by officers of Mossad, the Israeli intelligence agency.