Authorities, including local police and the FBI, have been engaged in an urgent search for Nancy, who is thought to have been kidnapped, for the past two weeks.

Nancy’s daughter, Savannah, who is well-known as a co-anchor on the US Today program, took to Instagram to acknowledge the two-week mark since her mother’s disappearance and to address the suspected kidnappers directly.

In her video message, Savannah expressed, “It’s been two weeks since our mom was taken, and I just wanted to come on and say that we still have hope and we still believe…”

She also conveyed a message to those who might have her mother or know of her whereabouts, stating, “It’s never too late.”

Savannah made another plea for her mother’s safe return, emphasizing that she and her family hold onto the hope that Nancy will be reunited with them.

“You’re not lost or alone. And it’s never too late to do the right thing. And we are here,” she concluded.

“We believe. And we believe in the essential goodness of every human being, and it’s never too late.

It is one of several public pleas for information that Savannah has posted on social media in the wake of her mother’s disappearance.

In one message, the journalist even appealed to the presumed kidnappers, offering to pay a ransom.

“We have received your message”, she said, before pleading for her mother’s return.

Law enforcement investigating Nancy’s disappearance have confirmed they had received some demands for ransom from different sources, but have not said if any of them are considered credible.

Purported ransom notes were sent to news outlets, but two deadlines for paying have passed.

The images and video show a man wearing gloves, long sleeves, pants, and with a balaclava over his face, apparently attempting to block the door camera at the home, including by holding up a handful of plants.

On Thursday, the FBI called the person a suspect.

It described him as a man about 1.75m tall with a medium build.

The agency said he was carrying a 25-litre “Ozark Trail Hiker Pack” backpack.

A glove containing DNA found just over 3 kilometres from Nancy’s house appears to match those worn by the person in the footage.

The glove, found in a field near the side of a road, was sent off for DNA testing.

The FBI said in a statement that it received preliminary results on Saturday and was awaiting official confirmation.

Authorities have expressed concern about Nancy’s health because she needs vital daily medicine.

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