Family Law Questions? Ask a Family Lawyer Online.
HelloThis is Samuel. If he has an open warrant call the sheriff in both states and the county where he is now living and tell them you know where he is and ask about having the warrant served. You also can contact the District Attorney in both states and counties and tell them you need him arrested, there is an open warrant and you know where he is.
I suggest also if the states are not interesting in helping you with this, that you review this LINK and then consider contacting the Department of Justice to have him charged federally.