A U.S. Coast Guard lieutenant and self-identified white nationalist was arrested after federal investigators uncovered a cache of weapons and ammunition in his Maryland home that authorities say he stockpiled to launch a massive domestic terror attack targeting politicians and journalists.

Christopher Paul Hasson called for “focused violence” to “establish a white homeland” and dreamed of ways to “kill almost every last person on earth,” according to court records filed in U.S. District Court in Maryland. Though court documents do not detail a specific planned date for an attack, the government said he had been amassing supplies and weapons since at least 2017, developed a spreadsheet of targets that included House Speaker Nancy Pelosi (D-Calif.) and searched the Internet using phrases such as “best place in dc to see congress people” and “are supreme court justices protected.”

“The defendant intends to murder innocent civilians on a scale rarely seen in this country,” the government said in court documents filed this week, arguing that Hasson should stay in jail awaiting trial.