United Kingdom, Feb. 17 -- Donald Trump has threatened Nancy Guthrie's kidnappers with the death penalty if she isn't returned alive.

The 84-year-old mother of Today show host Savannah Guthrie has been missing after being abducted from her home near Tucson, Arizona on February 1, and the search is ongoing with both the FBI Phoenix office and the Pima County Sheriff's Department still hoping to find her alive.

US President Trump has told the New York Post that if she is found dead, her abductors will face "very, very severe - the most severe" federal consequences.

Asked if that meant the Department of Juice could request the death penalty, he added: "The most, yeah - that's true."

While Trump hasn't spoken publicly about the case too o...