Investigators have reportedly returned to search the area behind Nancy Guthrie's home in Tucson's Catalina Foothills neighbourhood, according to a neighbour, days before the 84-year-old's disappearance reaches the six-month mark. A retired Pima County sheriff's lieutenant has suggested that recent monsoon rains may have shifted the landscape and potentially exposed new evidence in the unsolved case, keeping attention on an investigation that has so far produced no answers.

The neighbour told Fox News Digital she saw FBI personnel searching brush behind Guthrie's property, though a Pima County Sheriff's Department spokesperson's response was not fully detailed in available reporting. Bob Krygier, a former SWAT commander, offered his perspective on how heavy rain could alter terrain in ways that reveal previously hidden clues. Guthrie's disappearance from the affluent Catalina Foothills area has remained a mystery for nearly half a year, with authorities continuing to seek information as the case approaches this six-month milestone.