New Delhi, June 23 -- Television journalist Savannah Guthrie made an emotional appeal on live television after new information surfaced in the investigation into the disappearance of her mother, Nancy Guthrie.

During Tuesday's broadcast of the Today show, co-host Craig Melvin introduced a report about fresh developments in the case.

"This morning NBC News is reporting new information about one of the notes sent to multiple media outlets," Melvin said during the programme's 8 a.m. hour before the show aired a segment on the investigation.

According to NBC News, a second message sent days after Nancy Guthrie's disappearance claimed that she had died. Citing three people familiar with the matter, the report said the note contained no apol...