Sex determination cases: Who can investigate, and what has the Supreme Court said? | Explained
The Supreme Court ruled on three questions referred from conflicting High Court interpretations: whether police can register an FIR for offences under the Pre-Conception and Pre-Natal Diagnostic Techniques (Prohibition of Sex Selection) Act, 1994 (PCPNDT Act); whether police can investigate such offences; and whether a Magistrate can take cognisance of the offence based solely on a police charge sheet.
A Bench of Justices Sanjay Karol and Nongmeikapam Kotiswar Singh held, in State of Uttar Pradesh v. Dr. Brij Pal Singh (2026 INSC 901, decided in August 2026), that ordinary police do not have investigative authority under the Act.
The Court held that investigation and prosecution powers under the Act vest specifically with the "Appropriate Authority" set up under the statute; police may play only a limited, supplementary role when specifically asked to assist by that Authority.
The Bench further held that a Magistrate cannot take cognisance of a PCPNDT offence on the basis of a regular police charge sheet — prosecution can begin only through a complaint filed via the statutory mechanism.
The case arose from a decoy operation against a doctor accused of conducting illegal sex determination, which triggered divergent rulings on police powers in different High Courts, prompting the Supreme Court to settle the position.
PCPNDT Act, 1994 — special enforcement mechanism
The Pre-Conception and Pre-Natal Diagnostic Techniques (Prohibition of Sex Selection) Act, 1994 was enacted to check the misuse of diagnostic techniques (ultrasound, amniocentesis, chorionic villus sampling, pre-implantation genetic diagnosis) for prenatal sex determination and selection, in response to India's declining child sex ratio. It was substantially strengthened by the 2003 amendment, which brought pre-conception sex-selection techniques within its ambit and renamed the law from the original PNDT Act, 1994.
Key Details
- Prescribes a dedicated regulatory and enforcement structure: Appropriate Authorities (at state/district level) who register diagnostic clinics, inspect records, and are empowered to investigate and file complaints.
- Section 17(4) vests investigative responsibility for offences under the Act with the Appropriate Authority.
- Section 27 makes offences under the Act cognizable and non-bailable.
- Section 28 restricts a court from taking cognisance of an offence except on a complaint made by the Appropriate Authority, an officer authorised by the Central/State Government, or a person who has given the Appropriate Authority 15 days' notice of the alleged offence and intention to file a complaint.
The Supreme Court's ruling is essentially an interpretation of Sections 17(4), 27, and 28 — it holds that despite the offence being "cognizable" (which would normally let police register an FIR and investigate under the CrPC/BNSS), the Act's special complaint-based mechanism under Section 28 overrides the ordinary police investigation route, because it is a special law creating a self-contained procedure.
Special law vs. general law — the doctrine applied
When a special statute (like the PCPNDT Act) prescribes its own procedure for investigation and prosecution, courts apply the principle that the special law prevails over the general procedural law (Bharatiya Nagarik Suraksha Sanhita/CrPC), especially where the special Act uses an explicit non-obstante or complaint-only clause. This is a recurring theme in cases involving regulatory offences under acts like the NDPS Act, Prevention of Money Laundering Act, and PCPNDT Act, where the legislature deliberately creates a specialised enforcement machinery rather than relying on ordinary police investigation.
Key Details
- The classical formulation is "generalia specialibus non derogant" — general provisions do not derogate from special provisions.
- Under Section 4 of the CrPC/BNSS, offences under special or local laws are to be investigated and tried according to that special law's procedure where one exists, and only "subject to any enactment for the time being in force regulating the manner or place of investigating, inquiring into, trying or otherwise dealing with such offences."
The Court used this reasoning to hold that ordinary police investigation and FIR registration cannot override the PCPNDT Act's dedicated complaint mechanism, reinforcing that specialised welfare/regulatory legislation is enforced through the authority the legislature designated, not by default police powers.
Declining sex ratio and government response
Skewed sex ratios at birth reflect deep-rooted gender bias and son preference, and are treated as a major social issue under UPSC's Social Justice/Gender syllabus, alongside child sex ratio trends and government interventions like the PCPNDT Act and Beti Bachao Beti Padhao (BBBP) scheme.
Key Details
- Census 2011 recorded the child sex ratio (0–6 years) at 919 girls per 1,000 boys, down from 927 in 2001 (Census 1961 onward has shown a continuous declining trend).
- The Beti Bachao Beti Padhao scheme was launched on 22 January 2015, targeting the 100 districts with the poorest child sex ratio as per Census 2011, jointly implemented by the Ministries of Women and Child Development, Health and Family Welfare, and Education.
- Sample Registration System data shows sex ratio at birth improved from about 918 (2014-15) to 933 (2022-23), after touching a low of roughly 896 during 2015-17.
Robust, correctly-targeted enforcement of the PCPNDT Act (which this Supreme Court ruling clarifies) is one of the key legal levers, alongside BBBP, cited for these gradual improvements in sex ratio at birth.
- Case: State of Uttar Pradesh v. Dr. Brij Pal Singh, decided by the Supreme Court in August 2026 (2026 INSC 901); Bench of Justices Sanjay Karol and N. Kotiswar Singh.
- PCPNDT Act enacted in 1994 (as PNDT Act), significantly amended in 2003.
- Offences under the Act are cognizable and non-bailable (Section 27) but cognisance requires a complaint under Section 28.
- Census 2011 child sex ratio (0–6 yrs): 919 per 1,000 boys (down from 927 in Census 2001).
- Beti Bachao Beti Padhao launched 22 January 2015 in 100 identified districts.