Inordinate, unexplained delay in lodging FIR coupled with inconclusive medical evidence mandates acquittal in cases of circumstantial evidence.

The deceased married appellant Triveni in 1978. The informant (father of the deceased) alleged that the appellants harassed her for a motorcycle as additional dowry

On June 30, 1979, the deceased died of burn injuries. A post-mortem was conducted on July 1, 1979, identifying high-voltage electrocution as the cause of death

Despite the death occurring in 1979, the FIR was lodged over four years later, on November 18, 1983

In 1987, the Trial Court convicted the appellants under Sections 302/34, 201, and 120-B of the IPC

During the pendency of this appeal, appellants Chhote Lal and Shanti Devi died, leaving Triveni as the sole surviving appellant

1. Whether an unexplained delay of over four years in filing the FIR is fatal to the prosecution’s credibility

2. Whether the prosecution established a complete chain of circumstantial evidence to prove homicidal death beyond a reasonable doubt

3. Whether the medical evidence supported the theory of murder by an inflammable substance or the defense of accidental electrocution

The Court applied Section 302 (Punishment for murder), Section 201 (Causing disappearance of evidence), and Section 120-B (Criminal conspiracy) of the Indian Penal Code (IPC).

It relied on the fundamental principle of criminal jurisprudence that in cases of circumstantial evidence, the chain of circumstances must be so complete as to exclude every hypothesis save that of the guilt of the accused

The Court also emphasized the evidentiary value of the FIR and the necessity of a plausible explanation for inordinate delay to prevent "coloured versions" or "concocted stories"

Additionally, it referred to medical jurisprudence regarding "pugilistic attitude" and "entrance/exit wounds" in electrocution vs. chemical burns

The Court noted an "abnormal and unexplained" delay of 4 years and 6 months in lodging the FIR, which "severely shakes the credibility" of the case

Regarding the cause of death, the Court highlighted a conflict between the State Medico-Legal Expert (PW-2), who suspected inflammable liquid, and the doctor who performed the autopsy (PW-3), who confirmed signs of electrocution—specifically entrance/exit marks and the absence of kerosene smell

Since the nature of death (homicidal vs. accidental) remained "shrouded in doubt," the Court held that conviction could not be based on a mere presumption of homicide

Furthermore, as a case of circumstantial evidence, the prosecution failed to prove the appellant's presence at the scene or assign him a specific role; mere suspicion is insufficient to replace legal proof

The High Court set aside the Trial Court's judgment, allowed the appeal, and acquitted Triveni of all charges. The Court granted the appellant the "benefit of doubt" due to the delay in FIR, contradictory medical evidence, and the incomplete chain of circumstances