Maharashtra Government and IIT Bombay Develop AI Tool to Flag Suspected Illegal Immigrants
The Maharashtra government, in partnership with IIT Bombay, is developing an artificial intelligence-based tool designed to help law enforcement agencies identify suspected illegal Bangladeshi nationals and Rohingyas living in the state. The proposed system will analyse speech patterns, tone, and language usage as part of an early screening process during police inquiries.
Officials familiar with the project said the tool is being developed by the state’s information technology department under a ₹3-crore initiative. While the technology is still in the experimental stage, the government believes it could significantly change how suspected cases of illegal immigration are handled at the ground level.
What the AI Tool Is Designed to Do
Language-Based Screening, Not Final Proof
According to officials, the AI tool is not intended to replace traditional document verification or legal investigation. Instead, it will serve as a preliminary filter to help police decide whether a deeper nationality probe is required.
The system will analyse how a person speaks, focusing on factors such as accent, pronunciation, tone, and choice of words. Based on these linguistic markers, the tool will indicate whether the individual’s speech aligns more closely with patterns commonly associated with Bangladeshi nationals rather than residents of Indian states such as West Bengal.
Once flagged, law enforcement agencies can then move forward with detailed document checks and nationality verification through established legal procedures.
Political Push Behind the Project
CM Fadnavis’ Public Commitment
The project gained attention after Chief Minister Devendra Fadnavis spoke about it during the launch of the Mahayuti alliance’s manifesto on January 11. He stated that Maharashtra had already deported a large number of illegal Bangladeshi nationals and that technology would help scale up these efforts.
He said the government plans to use artificial intelligence to identify and deport all illegal Bangladeshi nationals from Mumbai and other parts of the state. According to the chief minister, the AI tool is expected to be operational within the next six months.
Why Language-Based Identification Is Controversial
Overlapping Dialects Across Borders
One of the biggest challenges facing the project is the linguistic overlap between Bangladesh and West Bengal. Bengali is spoken on both sides of the border, and dialects, accents, and vocabulary often blend seamlessly across regions.
This overlap is particularly strong in border districts such as North 24 Parganas, Nadia, Murshidabad, and Malda. Residents from these areas may sound similar to speakers from Bangladesh, making language-based distinctions difficult even for native Bengali speakers.
Officials acknowledge this challenge but insist the AI model is being trained to detect subtle linguistic differences that are not easily noticeable to the human ear.
Current Accuracy and Future Targets
Tool Still in Experimental Phase
As of mid-January 2026, officials said the AI system has achieved an accuracy rate of around 60%. The government’s goal is to improve this to near-perfect accuracy within four to six months.
Senior IT department officials, however, have expressed caution. Some have raised concerns about whether the tool will stand up to legal scrutiny, especially if its findings are challenged in court.
An officer involved in the project said that while progress has been steady, building a tool that is both technologically reliable and legally defensible may take longer than initially anticipated.
Why Police Say the Tool Is Needed
Fake Documents Complicate Investigations
Police officials say one of the biggest hurdles in identifying illegal immigrants is the widespread availability of forged or fraudulently obtained documents. Many suspected individuals possess Aadhaar cards, ration cards, or other identity papers, making it difficult for officers to proceed once documents are produced.
A senior home department official said that even when police suspect documents are fake, proving it is a lengthy and complex process. In many cases, officers are forced to drop further action due to lack of immediate evidence.
The AI tool, officials say, could provide an additional layer of justification for deeper investigation when doubts arise.
How the Tool Could Change Police Procedures
Stronger Basis for Further Scrutiny
According to officials, if the AI system suggests that a person’s linguistic profile does not match that of an Indian citizen from West Bengal or other regions, police would have stronger grounds to examine documents more closely.
Another official explained that the tool could help officers pursue forgery investigations more confidently. If nationality suspicion is supported by linguistic analysis, it becomes easier to justify the time and resources required to verify documents and trace their origins.
Legal and Ethical Questions Remain
Concerns Over Misuse and Errors
Despite government assurances, the project has raised questions about fairness, accuracy, and potential misuse. Legal experts have pointed out that speech patterns alone cannot determine nationality and that errors could lead to harassment of Indian citizens, particularly Bengali-speaking migrants.
Officials have stressed that the tool will not be used as sole evidence and that all final decisions will rely on legal verification processes. Still, concerns remain about how the system will be deployed on the ground and whether safeguards will be sufficient.
Detention Centres and Deportation Plans
Government Preparing for Next Steps
Chief Minister Fadnavis has also stated that the government has set up detention facilities to hold suspected illegal immigrants before deportation. He claimed police investigations have revealed a pattern in which alleged infiltrators enter India through West Bengal, obtain forged documents, and then move to other states to access government benefits.
The AI tool, according to the government, fits into a broader strategy to disrupt this alleged network.
What Lies Ahead
Technology Meets Governance
The Maharashtra government’s collaboration with IIT Bombay represents a growing reliance on technology in law enforcement and governance. Whether the AI tool becomes a game-changer or a subject of legal and ethical debate will depend on how it performs in real-world conditions.
For now, the project remains under development, with officials balancing political urgency, technological limitations, and constitutional safeguards.
Maharashtra’s plan to use an AI-based language analysis tool to identify suspected illegal Bangladeshi nationals marks a bold and controversial step. While officials argue it will help police overcome longstanding challenges posed by forged documents, critics warn of risks tied to linguistic overlap and potential misuse.
As the system moves closer to deployment, its accuracy, transparency, and legal robustness will determine whether it becomes an effective policing aid or a flashpoint in the debate over technology, identity, and civil rights.
