New Delhi, Aug. 2 -- Six months after 84-year-old Nancy Guthrie was abducted from her home outside Tucson, Arizona, her daughter, broadcaster Savannah Guthrie, has made an emotional public appeal for information as investigators released ransom notes in the hope that someone will recognize the writing style of the suspected kidnapper.

Saturday marked six months since Nancy Guthrie disappeared on February 1. No arrests have been made, and investigators continue to pursue multiple leads while urging the public to come forward with any information.

In a heartfelt Instagram post on August 1, Savannah Guthrie described the agony her family has endured since her mother disappeared.

"Six months ago, someone took her out of her bed in the dead...