Washington Gov. Bob Ferguson has activated the National Guard to aid in the search for Travis Decker, a former soldier wanted for the murder and kidnapping of his three daughters, whose bodies were found at a campground near Leavenworth.

Decker disappeared after failing to return the girls to their mother on June 2.

Authorities believe he may be traveling along the Pacific Crest Trail.

The manhunt, involving over 100 officers, covers rugged terrain in central Washington, KATU ABC 2 has reported.

Decker, an experienced outdoorsman with military survival training, is considered armed and dangerous.

Multiple trail and recreation areas have been closed as the search intensifies.

Written by B.C. Begley