India, June 1 -- Nancy Guthrie has been unaccounted for since Sunday, February 1. As the case hits the four-month milestone, officials are allegedly seeking to incorporate "new tools" into the investigation.

While attending CrimeCon in Las Vegas this weekend, Fox News Digital reporter Michael Ruiz shared some information regarding the modifications that federal law enforcement is considering to introduce.

During a panel discussion featuring defense attorney Donna Rotunno, Fox Nation's Paul Mauro, and investigator Josh Ritter, Ruiz mentioned that "a really good federal source" informed him that they are currently considering the introduction of "new tools" into the investigation.

Ruiz, who has been reporting on the high-profile disappea...