CROATIA CRIMINAL CODE
GENERAL PART
CHAPTER FOUR (iv) CULPABILITY
Mental Incapacity
Article 40
(1) A mentally incapable person shall not be culpable and no criminal sanction shall be imposed on such a person. A mentally incapable person may be placed in a psychiatric institution in accordance with the provisions of the Law on the Protection of Mentally Disturbed Persons.
(2) A mentally incapable person is one who at the time of the perpetration of an illegal act was incapable of understanding the significance of his conduct, or cannot control his will due to mental illness, temporary mental disorder, mental deficiency or some other severe mental disturbance.
Incapacity - national proceedings
Insanity - national proceedings
Mental disease or defect - national proceedings
EDIT.