DURANGO, Colo. (CBS4)- Investigators want everyone to take a look at surveillance photos that show Dylan Redwine the day before he disappeared.

One of the pictures is from Durango Airport the day the 13-year-old arrived to visit his father on a court-ordered visit for Thanksgiving.

The other is taken from a Walmart in Durango.

Dylan Redwine in a surveillance photo from Walmart in Durango before he disappeared. (credit: La Plata County Sheriff)

Dylan is from Colorado Springs. He was last seen Nov. 19.

Investigators continue to search the area near his father’s home.

Dylan’s mother, Elaine Redwine, told CNN both she and her ex-husband have taken polygraph tests. She said she passed her test although authorities have not released the details.

Dylan Redwine (credit: La Plata County Sheriff)

Authorities say they don’t believe Dylan Redwine ran away. About 50 people have been going door to door since last week looking for any information that could help them find him.