Multiple police agencies, including the FBI, investigated and debunked a tip of a possible doomsday cult reportedly stockpiling bombs and weapons at Eagle Caves in west The Dalles and planning a massacre, police say.

Police were initially told that members of an alleged cult calling itself the “Wolfpack” were planning an attack July 15 against The Dalles, Moro and Goldendale, said The Dalles Police Chief Jay Waterbury.