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, near a remote alpine lake in Washington state, after receiving a tip from hikers who said they saw a lone person who appeared to be ill-prepared for the conditions.