Days after a deadly ISIS attack on a Russian concert hall in March, a man clad in military fatigues and a helmet appeared in an online video, celebrating the assault in which more than 140 people were killed.

ISIS “delivered a strong blow to Russia with a bloody attack, the fiercest that hit it in years,” the man said in Arabic, according to the SITE Intelligence Group, an organization that tracks and analyses such online content.

But the man in the video, which the Thomson Reuters Foundation was not able to view independently, was not real – he was created using artificial intelligence, according to SITE and other online researchers.

Reuters