India, March 7 -- Nancy Guthrie, the 84-year-old mother of 'Today' host Savannah Guthrie, was last seen around 9:45 p.m. on January 31. Authorities say her disappearance appears to be a kidnapping or abduction.

She lived in the Catalina Foothills neighborhood of Tucson, Arizona. On Thursday, law enforcement went door-to-door in the area, asking neighbors whether they noticed any disruptions to their internet service on the night she went missing, according to NBC News.

Several homeowners told NBC News that agents specifically asked about internet or camera glitches that night.

One couple who lives next to Nancy Guthrie reported that one of their Ring cameras, the one closest to her home, showed a "not available" message when they tried...