Nearly 100 days after Nancy Guthrie disappeared from her home in Tucson, Arizona, investigators are reporting progress in the case. The 84-year-old mother of Today show host Savannah Guthrie went missing on February 1, sparking a large-scale investigation involving the FBI and the Pima County Sheriff's Department. Sheriff Chris Nanos stated that they are gaining ground, giving hope to the Guthrie family and supporters. One of the key developments is the analysis of a hair sample found at the scene, which has been sent to the FBI for advanced DNA testing. Investigators have also collected DNA from family members and others connected to the property. Surveillance footage has revealed a masked individual near the home around the time of the disappearance, raising concerns that the property may have been monitored prior to the abduction. Authorities have received between 40,000 and 50,000 tips since the investigation began, focusing efforts on the masked suspect seen in the footage. Sheriff Nanos acknowledged earlier mistakes in handling the crime scene but remains optimistic about finding Guthrie soon.