Any person who willfully gains unauthorized entry into any state penal institution, jail, any place where prisoners are located, or the penal institution grounds, upon conviction, shall be guilty of a felony punishable by imprisonment in the State Penitentiary for not less than one (1) year nor more than five (5) years, or by the imposition of a fine of not less than Five Hundred Dollars ($500.00) or more than One Thousand Dollars ($1,000.00), or by both such fine and imprisonment.