Case Note & Summary
The case arises from a criminal appeal filed by the complainant, Lakhan Singh, against an order of the High Court of Delhi. The High Court had allowed an application by the accused-respondent, Amarjeet Singh, under Sections 311 and 391 of the Code of Criminal Procedure, 1973 (CrPC), to lead additional evidence regarding his mental condition at the time of the incident. The accused had been convicted under Section 302 of the Indian Penal Code, 1860 (IPC) for murder and sentenced to life imprisonment. During the trial, the accused had moved an application under Section 330 CrPC claiming unsoundness of mind, which was dismissed by the Trial Court on 20.02.2014 after considering medical board reports and witness testimony. That order was affirmed by the Supreme Court on 12.10.2015. In the appeal against conviction, the accused again sought to raise the plea of insanity under Section 84 IPC, leading to the High Court's impugned order. The Supreme Court, after hearing arguments, found that the issue of the accused's mental condition at the time of the incident had already been concluded by the earlier orders. The High Court's order was set aside, and the appeal was allowed.
Headnote
A) Criminal Procedure - Additional Evidence in Appeal - Sections 311, 391 CrPC - The High Court allowed the accused to lead additional evidence regarding his mental condition at the time of the incident, despite the issue of his mental fitness having been previously adjudicated and affirmed by the Supreme Court. The Supreme Court held that the High Court's order was not sustainable as the matter stood concluded by earlier orders. (Paras 10-12) B) Criminal Law - Unsoundness of Mind - Section 84 IPC - The plea of insanity under Section 84 IPC was sought to be raised by the accused during appeal. The Supreme Court noted that the Trial Court had earlier rejected a similar application under Section 330 CrPC regarding the accused's mental condition at the time of the incident, and that order was confirmed by the Supreme Court. (Paras 7.1-7.3, 11) C) Criminal Procedure - Fitness to Face Trial - Section 330 CrPC - The Trial Court had earlier rejected the accused's application under Section 330 CrPC, finding him fit to face trial based on medical board reports and witness testimony. The Supreme Court affirmed this order, concluding the issue of mental fitness. (Paras 7.1-7.2, 11)
Issue of Consideration
Whether the High Court was justified in allowing the accused to lead additional evidence regarding his mental condition at the time of the incident under Sections 311 and 391 CrPC, when the issue of his mental fitness had already been adjudicated and affirmed by the Supreme Court in earlier proceedings.
Final Decision
The Supreme Court allowed the appeal, set aside the High Court's order dated 29.03.2022, and dismissed the application filed by the accused under Sections 311 and 391 CrPC.
Law Points
- Section 391 CrPC
- Section 311 CrPC
- Section 330 CrPC
- Section 84 IPC
- Section 302 IPC
- res judicata
- issue estoppel
- additional evidence in appeal
- unsoundness of mind
- fitness to face trial



