§702-218 Ignorance or mistake as a defense. In any prosecution for an offense, it is a defense that the accused engaged in the prohibited conduct under ignorance or mistake of fact if:
(1) The ignorance or mistake negatives the state of mind required to establish an element of the offense; or
(2) The law defining the offense or a law related thereto provides that the state of mind established by such ignorance or mistake constitutes a defense. [L 1972, c 9, pt of §1]