CONSTITUTION OF THE REPUBLIC OF CROATIA
III. PROTECTION OF HUMAN RIGHTS AND FUNDAMENTAL FREEDOMS
2. PERSONAL AND POLITICAL LIBERTIES AND RIGHTS
Article 22
Human liberty and personality shall be inviolable.
No one shall be deprived of liberty, nor may such liberty be restricted, except when specified by law, upon which a court shall decide.
Fair trial standards
Rights during investigation - arbitrary arrest or detention and deprivation of liberty
EDIT.