A Knoxville, Tennessee, man was arrested last month after investigators said he led a pro-Islamic State publication and translated propaganda into English.

Benjamin Alan Carpenter, also known as “Abu Hamza,” 31, was jailed on March 24 following the outcome of a grand jury indictment, which charged him with attempting to provide material support and resources to the Islamic State of Iraq and ISIS, the United States Attorney’s Office for the Eastern District of Tennessee announced Monday. Carpenter, a citizen of the United States, helmed Ahlut-Tawhid Publications, a media organization dedicated to promoting terrorist information in English, prosecutors said.