Conviction based on circumstantial evidence set aside where the chain of evidence remains incomplete and unproven.

The prosecution alleged that on the night of 12th/13th July 1988, during a marriage ceremony, the accused persons (Yogendra, Bindeshwari, and Adhiklal Mandal) called the deceased, Rajendra Mandal, away from his house and shot him dead in a nearby field due to prior enmity.

The informant (PW 9) and others claimed to have seen the accused fleeing with a rifle in torchlight.

The trial court convicted the sole surviving appellant, Yogendra Mandal, under Section 302/34 IPC and sentenced him to life imprisonment.

The appellant challenged this on grounds of material contradictions, interested witnessing, and defective investigation, including the non-examination of the Investigating Officer (IO).

1. Whether the prosecution established a complete and consistent chain of circumstantial evidence to prove the guilt of the appellant beyond reasonable doubt?

2. Whether the non-examination of the Investigating Officer and the lack of independent witnesses prejudiced the defense in the context of admitted prior enmity?

The court primarily applied Section 302 read with Section 34 of the Indian Penal Code regarding murder and common intention.

It relied on the "Five Golden Principles" (Panchsheel) for circumstantial evidence established in Sharad Birdhichand Sarda v. State of Maharashtra, which require the chain of evidence to be so complete as to exclude every hypothesis of innocence.

The court also considered Section 165 of the Indian Evidence Act regarding the court's power to seek truth.

The court considered the evidentiary value of "last seen" theory and "previous enmity" as a double-edged weapon.

The court found the prosecution's chain of circumstances broken and unreliable. First, although the "last seen" theory was invoked, the witnesses (PW 1, 2, 8, 9) were all closely related and inimical to the accused due to a prior murder trial where the roles were reversed.

Second, the court noted material improvements: PW 2 claimed for the first time in court to have seen the actual firing, an omission in his Section 161 statement that went to the root of the case.

Third, identification was doubtful, as it occurred on a dark, drizzling night from a distance; the court observed that witnesses would likely see the backs, not the faces, of fleeing men.

Fourth, the non-examination of the IO was deemed prejudicial because material contradictions regarding the place of occurrence and witness statements could not be verified.

Finally, the failure to examine any of the numerous independent "Baratis" (wedding guests) present led to an adverse inference against the prosecution.

The appeal was allowed, and the judgment of conviction dated 17.07.1996 was set aside. The appellant, Yogendra Mandal, was granted the benefit of the doubt and acquitted of all charges. The court ordered the cancellation of his bail bonds and discharge of sureties.