Durango, CO (KUSA 9) -- Teams are searching around Vallecito Lake for 13-year-old Dylan Redwine who has been missing for a week.

La Plata County Sheriff's spokesman Dan Bender says searchers had no luck on Sunday but would resume efforts at the lake Monday.

The New Mexico dive team plans to use a high-powered sonar gun to try and locate any large objects in the designated dive area. This will allow them to focus their energy and time in those locations.

Divers can only stay under for 25 minutes before they have to come up and stay out of the water for several hours due to the altitude and the temperatures in the area.

The boy lives in Colorado Springs but was visiting his father in Vallecito on Thanksgiving break.

He is 5 feet tall, 105 pounds, with blond hair, blue eyes and fair complexion. He was wearing a blue-and-white Duke Blue Devils baseball cap, black Nike T-shirt and black Jordan tennis shoes.

Bender says scuba divers will search the lake while teams will also comb the shoreline area.

He says investigators are exploring all possibilities including a runaway situation.

(KUSA-TV © 2012 Multimedia Holdings Corporation with The Associated Press)