Poland
Chapter IITHE FREEDOMS, RIGHTS AND OBLIGATIONS OF PERSONS AND CITIZENSPERSONAL FREEDOMS AND RIGHTSArticle 414. Anyone deprived of liberty shall be treated in a humane manner.
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.