Code of Criminal Procedure, 1973–Sec. 161 [Corresponding Sec. 180 of BNSS, 2023]–Contradiction in the statement of witness–Way of confronting–The portion of the prior statement shown to the witness for contradicting the witness must be proved through the investigation officer–Unless the said portion of prior statement used for contradiction is duly proved, it cannot be reproduced in the deposition of the witness–The correct procedure is that the Trial Judge should mark the portion of the prior statements used for contradicting the witness–The said portion can be put in bracket and marked as AA, BB, etc.–The marked portions cannot form a part of the deposition unless the same are proved.