Authorities intensify manhunt for Travis Decker, who is accused of killing his three daughters, as they warn one mistake will lead to his capture in the Washington wilderness.

Paityn Decker, 9; Evelyn Decker, 8; and Olivia Decker, 5, were located on June 2 near the Rock Island Campground in Chelan County, Washington, police said.

The Chelan County Sheriff's Office has taken over the investigation as the search for Travis Decker continues.