CHAPTER IV: PROTECTION OF FUNDAMENTAL RIGHTS AND FREEDOMS
19. Protection of the right to personal liberty
(1) Every person shall have the right to liberty and security of the person. No one shall be subject to arbitrary arrest or detention. No one shall be deprived of his or her liberty except on such grounds and in accordance with such procedures as established by law.
Rights during investigation - arbitrary arrest or detention and deprivation of liberty
EDIT.