A former employee of St. Petersburg’s infamous “troll factory” was arrested in St. Petersburg on Sunday, hours after speaking about his work as a pro-Kremlin commentator to foreign journalists.

Special Counsel Robert Mueller charged 13 Russians and three companies on Friday for involvement in a sophisticated, years-long conspiracy to meddle in the 2016 U.S. presidential elections.

Marat Mindiyarov, one of the first self-confessed “trolls” to speak to Western journalists about his work, told The Moscow Times that he was detained by police late on Sunday for allegedly making a false phone call about a planted bomb in a nearby village, a charge he denies.

Before his arrest, Mindiyarov had given several interviews to U.S. outlets about his role as an employee at the Internet Research Agency, a company allegedly financed by Kremlin-linked businessman Yevgeny Prigozhin, who was named in Mueller’s indictment on Friday.

