A German celebrity chef with a penchant for conspiracy theories is being investigated by police in Berlin on Friday for a series of antisemitic postings on social media. A police spokesperson told German news outlets that postings over the last four weeks by Attila Hildmann, the author of best-selling vegan cuisine cookbooks who frequently appears on German TV, were being examined for their hateful content.

Born in Berlin, Hildmann is of Turkish ancestry and was raised by German adoptive parents. His posts on the Telegram social media platform have attacked Jews and “Zionists” as “parasites” and “subhumans.” Many of the outlandish themes he has pushed are familiar in far-right and neo-Nazi circles claiming that the “Jewish tribe of Zionists” sought to destroy Germany after World War I with financial reparations.

Hildmann has also opined that the Holocaust was financed by “Zionists,” and that Adolf Hitler was a “blessing” when compared with Germany’s current Chancellor Angela Merkel, whom he described as a “communist.”

As well as facing potential criminal charges, Hildmann is also contending with loss of revenue as a result of his social media antics. A music portal and an energy drink that featured Hildmann as part of their brands announced on Friday that they would no longer work with him, and more companies were expected to follow suit.