PART ONE
GENERAL PROVISIONS
CHAPTER IX
ARREST AND PROVISIONAL APPREHENSION
Section 114b
[Instruction of Arrested Accused; Rights]
(1) The arrested accused shall be instructed as to his rights without delay and in writing in a language he understands. If written instruction is clearly insufficient, oral instruction shall also be given. The same procedure shall apply mutatis mutandis if it is not possible to give instruction in writing; written instruction shall, however, be given subsequently insofar as this can reasonably be done. The accused shall confirm in writing that he was given instruction; if he refuses, this shall be documented.
Language
Rights during investigation - access to interpreter and translation if questioned in other language
EDIT.