J.

Val.

Oh at Yellowstone National Park, siblings took a trip.

They're with their mother, Lori Val Oh, and their uncle, Alex Cox, just before they disappeared.

September 8th trip was the last time 17 year old Tiley was seen.

We have no witnesses who can verify that they have seen Tiley since, police said in court documents, the FBI also shared a photo of Cox's silver pickup truck and its license plate, which authorities say the family drove to Yellowstone.

The FBI is now asking anyone who was at Yellowstone that day to share their own photos and videos to see if J.

J and Tiley might be in them.

Heavy snow makes searching the park now complicated, but even in good weather, it's a daunting task.

The park spans 3000 square miles.

Seven year old J J was last seen at his elementary school in Rexburg, Idaho, September 23rd.

This is the last known video of him, which was taken September 17th by a neighbor's doorbell camera.

The release of these new photos and the FBI's request for help comes as Laurie returns to Idaho from Hawaii.

In handcuffs.

She's facing multiple charges, including two counts of felony desertion of a child.

Her fifth husband, Chad Dave L.

Traveled back to Idaho as well.

He has not been charged with a crime amid the ongoing search for them.

Jay, Jay and Tyler grandfather has a message for chat Man up, son, It is time for you to have a talk with your wife and in this find those kids.

Both Chad and Lori Dave L deny all allegations of wrongdoing.

Did you do something to your Children?

With Lori back on the mainland, the search continues for J J entirely for inside edition dot com.

I'm Caitlin Ford.