Savannah Guthrie will "never stop looking" for her mom, Nancy Guthrie.

The "Today" anchor, 54, took to Instagram on Mother's Day to share a poignant tribute to her 84-year-old mother, who has been missing for more than three months. Authorities believe Nancy Guthrie was taken from her Arizona home against her will.

"Mother, daughter, sister, Nonie − we miss you with every breath," Guthrie wrote. "We will never stop looking for you. We will never be at peace until we find you."

Guthrie shared the message along with a touching video compilation showing various family photos and clips of Nancy Guthrie, including several where the "Today" anchor and her mom pose together.

In the caption, Guthrie again urged anyone who might know anything about her mother's disappearance to call 1-800-CALL-FBI.