Investigators have found a glove that appears to match one of those a suspect was wearing in doorbell camera footage taken the night Nancy Guthrie disappeared.
The FBI said in a Sunday update that investigators recovered DNA evidence from the glove, which was found in a field near the side of the road about two miles from Guthrie's home in Tucson, Arizona.
The agency said it has received preliminary DNA test results on the glove and is still waiting for "quality control and official confirmation" before entering an "unknown male profile" into its database.
Guthrie, the 84-year-old mother of US TV news anchor Savannah Guthrie, has been missing for two weeks.
In its Sunday update, the FBI also said it had collected about 16 gloves from various areas near Guthrie's home, though most were discarded by searchers looking for her.
