A glove discovered as part of the investigation into Nancy Guthrie's kidnapping has produced no DNA matches, authorities in Pima County, Arizona, say.

Found approximately two miles from Guthrie's home, the glove appeared to match one that can be seen on the hand of a suspect in doorbell-camera footage taken the night she went missing.

DNA from the glove was sent for testing on Thursday, but produced no matches in CODIS, the FBI's database of DNA from known offenders.

Nancy Guthrie, the 84 year-old mother of news anchor Savannah Guthrie, has been missing since 1 February, when investigators believe she was taken from her home against her will. The family has made repeated pleas for her return.

The FBI said on Sunday that investigators recovered the glove from a field near the side of the road about two miles (3 km) from Guthrie's home near Tucson, Arizona.