Procedure where accused does not understand proceedings and Power to proceed against other persons appearing to be guilty of offence are defined under Section 318 and 319 of CRPC 1973. Provisions under these sections are:
Section 318 of CRPC "Procedure where accused does not understand proceedings"
If the accused, though not of unsound mind, cannot be made to understand the proceedings, the court may proceed with the inquiry or trial; and, in the case of Court other than a High Court, if such proceedings result in a conviction, the proceedings shall be forwarded to the High court with a report of the circumstances of the case, and the High Court shall pass thereon such order as it thinks fit.
Section 319 of CRPC "Power to proceed against other persons appearing to be guilty of offence"
(1) Where, in the course of any inquiry into, or trial of an
offence, it appears from the evidence that any person not
being the accused has committed any offence for which such
person could be tried together with the accused, the Court
may proceed against such person for the offence which he
appears to have committed.
(2) Where such person is not attending the Court, he may be
arrested or summoned, as the circumstances of the case may
require, for the purpose aforesaid.
(3) Any person attending the Court, although not under
arrest or upon a summons, may be detained by such Court for
the purpose of the inquiry into, or trial or, the offence
which he appears to have committed.
(4) Where the Court proceeds against any person under
sub-section (1), then-
(a) the proceedings in respect of such person shall be
commenced afresh, and the witnesses reheard;
(b) subject to the provisions of clause (a), the case may
proceed as if such person had been an
accused person when the Court took cognizance of the offence
upon which the inquiry or trial was commenced.
GENERAL PROVISIONS AS TO INQUIRIES AND TRIALS