Section 437(1) & (2) Cr.P.C is a stage prior to trial whereas section 437 (6) Cr.P.C is after filing of charge-sheet and framing of charge when trial commences
Discharge: When specific remedy is available under section 397 Cr.P.C the CBI ought not to have filed petition under section 482 Cr.P.C
Portions contradicted with the previous statement can be put in bracket and marked as Exhibit AA, BB, e.t.c
Dowry death: Acquittal: Evidence on record is full of omissions amount to material contradiction
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