Nancy Guthrie disappeared from her home in Tucson, Arizona six months ago. She is the mother of Today show host Savannah Guthrie.

Investigators released two ransom notes from presumed kidnappers. The second note claimed Nancy Guthrie had died.

It said she was buried in nature. The note said the kidnappers did not know how serious her condition was.

Authorities have not confirmed her fate. The family made a new appeal on Saturday for information.

They want to know where she is. Savannah Guthrie shared a statement about her mother.

She said their hearts are in ruins. Authorities are studying the notes' word choice and writing style.

This may help identify who wrote them. The Pima County Sheriff's Department said a suspect visited Nancy's home before she disappeared. Officials released doorbell camera video of an unidentified man linked to that visit.