Matt Finn

They dedicate their lives searching for missing people.

Now, one of the women with the group tells us that people in Mexico are aware of the Nancy Guthrie case.

They're doing grassroots investigation and foot searches looking for Nancy and other missing people in areas known for criminal activity.

Hey, Greg, we're about an easy 90-minute drive north of Mexico, so it would be impossible to ignore a scenario where maybe Mexico or the cartel is involved.

But so far, Sheriff Nanos tells us he is not aware of any direct link to Mexico.

A single federal source tells Fox Digital that the FBI is in communication with Mexican officials.

in relation to the Nancy Guthrie case.

And a short while ago, I was told that it is standard procedure for the FBI to be in contact with their counterparts in Mexico on cases like this, that the FBI has likely been in touch with Mexico since the start, as this is so close to the border.

So there's a lot of theories and some reporting that the kidnapping or alleged ransom notes may have placed Nancy or the suspect south of the border, but nothing has been validated.

Also, there's been so much speculation about the relationship between the Sheriff Nanos and the FBI.

The sheriff tells Fox News that they are getting along well.

The FBI has previously told us they're in the command center together.

And I was just told a short while ago again that these agencies are getting along just fine on the ground.

I mean I don't know if this is appropriate to ask, but can I ask about GLP-1s?

It's been such a conversation nationally.

Is that something that you've tried?

That glove of interest did not have a CODIS hit and also it did not match a DNA inside the house.

But of course the glove could come into play at some point.

And also the sheriff says the DNA from inside the house is critical too.

The sheriff's office says it will be using other options aside from CODIS, including genealogy databases.