Constitution of Bangladesh
PART III - FUNDAMENTAL RIGHTS
Right to protection of law
31. To enjoy the protection of the law and to be treated in accordance with law and only in accordance with law is the inalienable right of every citizen wherever he may be and of every other person for the time being within Bangladesh and in particular no action detrimental to the life liberty body reputation or property of any person shall be taken except in accordance with law.
Fair trial standards
Rights during investigation - not to be subjected to any form of coercion, duress or threat, to torture or to any other form of cruel, inhuman or degrading treatment or punishment
EDIT.