Elon Musk threatened a top judge in Brazil after the country’s highest court said it could block his social media website, X, if it didn’t appoint a local legal representative by Thursday night.

Musk responded to the top court’s ultimatum with a seemingly AI-generated image of a supreme court justice who has been spearheading efforts in Brazil to crack down on hate speech and misinformation. The image, which showed the justice, Alexandre de Moraes, behind bars, was accompanied by a threatening message that tagged him.

“One day, u/Alexandre, this picture of you in prison will be real. Mark my words,”