Popular US television news anchor Savannah Guthrie posted an Instagram video on Saturday, alongside her siblings, offering to pay for the return of their mother.

“We will pay,” said Guthrie, on the seventh day of the disappearance of Nancy Guthrie, 84, a week after Savannah, her sister Annie, and her brother Camron, posted their first video together, addressed to their mother’s possible captors.

“We received your message, and we understand,” said the news anchor. “We beg you now to return our mother to us so that we can celebrate with her. This is the only way we will have peace. This is very valuable to us,” she added.

Police have recently said that they believe that Nancy Guthrie was kidnapped. At the moment, the reward offered for information is $50,000 (£36,000), BBC News reported.

According to a Reuters report, the Pima County Sheriff's Department said on Saturday that it has not identified any suspects or people of interest in the case.

Trump suggests case answers are coming soon

Last Friday, the authorities responsible for the case noted that they were investigating a new message about the matriarch. The message would be potentially related to the case, according to BBC News.

On the same day, US President Donald Trump suggested a resolution to the case was at hand, saying, "I think we could have some answers coming up fairly soon," Reuters reported.

Guthrie's family and law enforcement have previously warned that the victim may be at risk without her medication. "She is without any medicine," Savannah Guthrie said in a previous announcement. "She needs it to survive. She needs it not to suffer."

Pima County Sheriff Chris Nanos has described Nancy Guthrie as frail with extremely limited mobility. Nanos said she could not have left her home unassisted.

Guthrie was last seen near Tucson, Arizona, on January 31 when she was dropped off at her residence by family members after having dinner with them. Relatives reported her missing around noon the following day, according to authorities.