The Army veteran is charged with three counts of first-degree murder and kidnapping in connection with the deaths of Paityn Decker, 9, Evelyn Decker, 8, and Olivia Decker, 5

Authorities say they believe they spotted Travis Decker, an ex-soldier wanted in the deaths of his three daughters, in the remote backcountry of Washington state, after receiving a tip from hikers who said they saw a lone person who appeared to be

Law enforcement officials said they have tracked a subject they believe to be Travis Decker, the father suspected of killing his three daughters, after receiving a tip from local hikers. Tracking teams now believe they are "on Decker's trail,