India, Feb. 8 -- As the search for Nancy Guthrie enters its second week, new security footage and tips have fueled speculation around her son-in-law, Tommaso Cioni, though authorities have not confirmed any suspects.

Police in Arizona, looking for Nancy Guthrie, now have security footage from a Circle K store that may have shown a "vehicle of interest" in the mysterious case. According to NBC News, according to reports, the vehicle was at or close to the Tucson convenience shop.

Earlier in the week, journalist Ashleigh Banfield suggested on her podcast that Tommaso Cioni, the husband of Nancy's daughter Annie and the last known person to see her alive, may be a "prime suspect" in the case.

Pima County Sheriff Chris Nanos later labelled...