Part One. General Provisions
Section I. Basic Provisions
Chapter 2. Principles of the Criminal Court Proceedings
Article 10. Immunity of the Person
1. No one can be detained on the suspicion of committing a crime or put under arrest in the absence of the legal grounds for this, envisaged in the present Code. Pending the court decision, no one can be detained for a term of over 48 hours.
2. The court, the prosecutor, the body of inquiry and the inquirer are obliged to immediately relieve any person, who has been illegally detained or illegally deprived of freedom, or illegally placed into a medical or psychiatric stationary hospital, or has been held in custody over a time term in excess of that stipulated by the present Code.
3. The person, with respect to whom was selected the measure of restriction in the form of being taken into custody, as well as the person detained on suspicion of committing a crime, shall be maintained under conditions precluding a threat to his life and health .
Fair trial standards
Rights during investigation - arbitrary arrest or detention and deprivation of liberty
EDIT.