AdvertisementMark Lorenzo Villanueva, 29, pleaded guilty to one count of attempting to provide material support to a foreign terrorist organization and one count of being a felon in possession of a firearm. Villanueva has been in federal custody since August 2025. Villanueva also discussed conducting operations for ISIS in the United States. At all relevant times, Villanueva knew the bomb was considered a firearm and a destructive device under federal law, and the device was not federally registered as required by law. Assistant United States Attorney Colin S. Scott of the National Security Division is prosecuting this case, with substantial assistance from Trial Attorney Patrick Cashman of the National Security Division’s Counterterrorism Section.