A fresh wanted poster has been issued in the ongoing manhunt for Travis Decker, a 32-year-old ex-soldier linked to the deaths of his three young daughters, a case that remains unresolved into its third week.

Late Tuesday, authorities released three images illustrating how Decker may have changed his appearance while evading capture. These digitally altered photos depict him with his regular long hair, as well as versions where he has a shaved head and a clean-shaven face.

Since Decker did not return his daughters to their mother following a custody visit on May 30, extensive search crews have been combing remote parts of Washington State for weeks.

The three girls — Paityn, 9, Evelyn, 8, and Olivia, 5 — were discovered dead three days later at a camping site in Wenatchee. Photos show them laughing and playing just before their deaths.