W. Va. Code § 62-10-2

If complaint be made to any justice, that there is good cause to fear that a person intends to commit an offense against the person or property of another, he shall examine the complainant on oath, and any witnesses who may be produced, reduce the complaint to writing, and cause it to be signed by the complainant. If it appear proper, such justice shall issue a warrant, reciting the complaint, and requiring the person complained of forthwith to be apprehended and brought before him or some other justice of the county.