Authorities in central Washington are urging residents to lock their doors as the search continues for Travis Decker, accused of killing his three young daughters.

WATCH THE VIDEO: Father accused of killing his 3 daughters

The Chelan County Sheriff’s Office said investigators have executed several search warrants in the area and on electronic devices belonging to Decker, but he has not been found.

Decker is wanted on three counts of first-degree murder and kidnapping after his daughters — ages 9, 8, and 5 — were found dead Monday.

The girls' mother reported them missing last Friday night when they were not returned home from a planned visit with Decker, according to the Wenatchee Police Department.

Decker was in the Army and is reportedly well-versed in wilderness survival, capable

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