PART ONE
GENERAL PROVISIONS
CHAPTER IX
ARREST AND PROVISIONAL APPREHENSION
Section 114b
[Instruction of Arrested Accused; Rights]
An accused who does not have a sufficient command of the German language shall be advised that he may demand that an interpreter be called in to the proceedings free of charge. A foreign national shall be advised that he may demand notification of the consular representation of his native country and have messages communicated to the same.
Language
Rights during investigation - access to interpreter and translation if questioned in other language
EDIT.