C.R.S. § 16-3-108

A court shall issue an arrest warrant only on affidavit sworn to or affirmed before the judge or a notary public and relating facts sufficient to establish probable cause that an offense has been committed and probable cause that a particular person committed that offense. The court shall issue a warrant for the arrest of such person commanding any peace officer to arrest the person so named and to take the person without unnecessary delay before the nearest judge of a court of record. Once a person is brought before the judge, the Colorado rules of criminal procedure are applicable.