Search for missing Wyoming boy continues

Authorities said Thursday they’ve now covered 140 square miles in their search for 16-year-old Joseph “Joey” Peterson.

Peterson walked away from his family’s home in southeastern Natrona County on Sunday.

Sheriff’s officials began looking for him soon after.

The Casper Star-Tribune reports federal, state and local agencies have used helicopters, drones, dogs, night vision and heat-sensing technology to look for Peterson.

Peterson has high-functioning autism and is not self-sufficient. He was wearing a red, hooded sweatshirt and pajama pants.

Temperatures have dipped well below freezing and snow has fallen since Peterson went missing.

Peterson has blond hair; is 5 feet, 9 inches tall; and weighs 120 pounds.