CHAPTER 1
General Explanations
24. Nothing is an offence which is done by a person who at the time of doing it is by reason of being in a certain state of mind, is incapable of knowing the nature of the act or that it may be contrary to law. This provision shall not be applicable to a person who creates that state of mind on his own volition or with his consent or by doing an act with knowledge that it will or may be likely to cause that state of mind.
Incapacity - national proceedings
Insanity - national proceedings
Mental disease or defect - national proceedings
EDIT.