W. Va. Code § 15-3C-4: Activation of Blue Alert.

The following criteria shall be met before the West Virginia State Police activate the Blue Alert:

(1) A law-enforcement officer has been killed or seriously injured, or is believed to be missing, in the line of duty;

(2) There is sufficient information available relating to the officer’s last known location or the physical description of any suspect, suspects, or vehicles involved that could be broadcast to assist in locating the officer, suspect, or suspects.