Margin of Error in Ossification Test Benefits POCSO Accused: Gauhati HC

The Gauhati High Court has underscored the fallibility of medical age determination, ruling that a two-year margin of error in ossification tests must necessarily benefit the accused in cases where statutory age proof is absent. This decision reinforces the high evidentiary threshold required to sustain convictions under child protection laws when the victim's minority status is contested without documentary evidence.

In a significant reversal of a trial court verdict, Justice Mitali Thakuria set aside the conviction of a man accused of kidnapping and sexual assault, observing that the prosecution failed to establish the victim’s age beyond reasonable doubt. The Bench emphasized that in the absence of birth or school certificates, the medical assessment of age remains a guiding factor rather than a conclusive proof of minority.

Key Takeaways

Primacy of Documentary Age Proof

The Gauhati High Court reaffirmed that birth certificates, school records, or matriculation certificates are the primary standards for determining age, and medical evidence serves only as a secondary resort.

Benefit of Doubt on Margin of Error

A margin of error of two years on either side in radiological age assessments must be interpreted in favor of the accused, potentially transforming a minor into a major in the eyes of the law.

Limitations of Medical Evidence

Ossification tests are not incontrovertible; they are mere indicators that cannot override the lack of specific statutory age documentation in criminal prosecutions.

Consent and Circumstantial Conduct

The Gauhati High Court highlighted that the victim's conduct—such as staying with the accused for extended periods without complaint—can weaken allegations of kidnapping and forcible assault when minority is not strictly proven.

The Requirement of Conclusive Age Proof in POCSO Cases

The appellant challenged the judgment of the Special Judge, Barpeta, which had sentenced him to seven years of rigorous imprisonment under Section 4 of the POCSO Act and two years under Section 363 of the IPC. The appellant’s counsel, Mr. A. Roshid, argued that the trial court failed to appreciate the discrepancies in the witnesses' statements and the total lack of age proof for the victim.

The Gauhati High Court noted that the I.O. could not collect any birth or school certificates and relied solely on a medical examination conducted under the CrPC framework. The medical officer (PW-5) assessed the victim's age between 16 and 18 years. Applying the settled principle from Shiva Chautal Vs State of Assam, the Bench found that even a one-year margin of error in ossification test would place the victim at 18 years of age, thereby removing her from the definition of a 'child' under Section 2(d) of the POCSO Act.

Consent and Prosecution Failures

While the medical evidence supported the existence of sexual relationship, the Gauhati High Court found no evidence of force or kidnapping. It was observed that the victim had a prior relationship with the accused and lived with him in Delhi and Barpeta for nearly a year without raising an alarm. The Bench observed that “It is a settled principle of law that in absence of any birth certificate, school certificate or matriculation certificate etc., one has to take resort of the medical evidence or radiological age of the victim or the accused, as the case may be... But it is well settled that ossification test or the medical evidence cannot be considered as a conclusive proof of age and leaves a margin of error of 2 years on either side and at the same time, it also a settled principle of law that in such a case, the age of victim always goes in favour of the accused.”

Ratio

In a prosecution under the POCSO Act, where the age of the victim is not supported by statutory documents like a birth certificate or school record, the medical or radiological age assessment is subject to a two-year margin of error. The benefit of this margin of error must be granted to the accused. If the upper limit of the age range, including the margin of error, suggests the victim could be a major, the charge under the POCSO Act cannot be sustained as the minority of the victim is not proved beyond reasonable doubt.

Background

The prosecution alleged that in 2018, the accused kidnapped the 14-year-old victim and took her to Delhi, where she was sexually exploited. An FIR was lodged seven months later under Section 365 and Section 376 of the IPC read with Section 8 of the POCSO Act. The trial court convicted the appellant primarily based on the testimony of the victim and her parents.

However, during the appeal, the Gauhati High Court observed that the victim's own testimony indicated a consensual relationship and a voluntary stay with the accused. Critically, the absence of conclusive age proof meant the prosecution could not bridge the gap between a consensual relationship and a statutory offense. Relying on the principles of criminal jurisprudence and the specific precedent in Shiva Chautal Vs State of Assam, the Gauhati High Court allowed the appeal and acquitted the appellant.

Case Details:
Case No.: Crl.A./87/2024
Neutral Citation: 2026:GAU-AS:13962
Case Title: MD. ABDULLAH VS THE STATE OF ASSAM AND ANR.
Appearances:
For the Petitioner(s): MR. A ROSHID, MS. T BEGUM
For the Respondent(s): PP, ASSAM, MS F HUSSAIN (AMICUS CURIAE, R2)

Source: 2026 CaseBase(GAU) 1289