An FBI agent reportedly visited Armor Bearer Arms in Tucson, Arizona, presenting co-owner Phillip Martin with a list of 18 to 24 individuals, including names and photos, and requested a check of firearm sales within the past year. Martin stated that his store's system found no matches for any of the individuals on the provided list. The agent indicated that similar inquiries would be made at other gun stores as part of the ongoing investigation into the disappearance of Nancy Guthrie, who vanished from her home on February 10, 2025. Pima County Sheriff Chris Nanos has disputed claims that the suspect pool has been narrowed to a specific number of individuals, emphasizing that investigators are still analyzing various pieces of evidence.