Bihar Gangsters Built Criminal Network in Kolkata: A high-profile investigation by the Bihar Special Task Force (STF), in collaboration with the Kolkata Police STF, has unveiled a disturbing development: an expanding nexus of Bihar-based gangsters who were using Kolkata as a base to build a local criminal network. The joint operation has led to the arrest of several key accused involved in the assassination of gangster Chandan Mishra, which took place inside a Patna hospital.
The gangsters, Tausif Raza alias Badshah and his cousin Nishu Khan, had reportedly spent significant time in Kolkata since 2023. They operated quietly, blending into urban anonymity, using local connections and guest houses across Topsia, Tiljala, Park Circus, and Anandapur to facilitate arms deals, recruit local aides, and evade arrest.
The Patna Murder That Sparked the Trail
On July 17, Chandan Mishra, a known gangster with at least 24 cases including 12 murder charges, was killed in broad daylight inside a Patna hospital ICU while on medical parole. The killers entered the premises, shot him at point-blank range, and escaped.
Investigations led Bihar Police to believe that the murder was planned in Kolkata by Tausif and Nishu, with multiple operatives deployed to execute the crime. The level of coordination and movement across state lines prompted a collaborative STF probe.
According to investigators, the duo had not only visited Kolkata frequently over the past year but had also built operational support systems in the city to hide fugitives, store weapons, and use safehouses for pre- and post-crime coordination.
Bihar Gangsters Built Criminal Network in Kolkata: Arrests Made in Kolkata
Within days of the murder, four of the accused, including prime shooter Tausif, logistics coordinator Nishu Khan, and aides Harsh and Bhim, were traced to a guest house in Anandapur, a residential pocket in the eastern suburbs of Kolkata.
Their arrest was based on a digital trail of mobile tower data, surveillance footage, and intercepted messages that placed them in the city weeks before and after the crime.
The group was produced in a Kolkata court and subsequently handed over to Bihar Police on transit remand, with police instructed to ensure due process and medical safeguards during transfer.
Kolkata’s Emerging Role as a Criminal Haven
The arrests highlight an alarming trend — Kolkata is becoming a staging ground for inter-state criminals due to its dense urban fabric, availability of guest houses and rented flats, and limited surveillance in suburban residential complexes.
Police revealed that the gang had previously used areas like Topsia, Tiljala, and Park Circus to conduct meetings and store arms. These neighborhoods are known for congested housing, mixed commercial zones, and limited formal policing—making them fertile ground for illegal operations.
Nishu Khan, despite being wheelchair-bound, was considered the brains behind logistics, often coordinating through local middlemen, online transactions, and trusted contacts in West Bengal. His role involved arranging housing, purchasing SIM cards under fake names, and identifying temporary hideouts for fellow gang members.
Who Are Tausif and Nishu?
Tausif Raza (alias Badshah)
Once a student at a prestigious school in Patna and the son of a teacher and shop owner, Tausif’s descent into crime was steep. Starting with petty offenses, he became active in contract killings and extortion rackets by 2022. His social media persona glorified violence, projecting him as a ‘don of Patna’—a fact that helped police track his movements.
Nishu Khan
Nishu, aged 28, became a major criminal strategist despite being physically disabled. Known for his quiet demeanor, he was instrumental in laying out escape plans, arms purchases, and network expansion into Kolkata. Police believe he was responsible for recruiting local foot soldiers and smuggling small arms from Bihar into Bengal.
Both cousins were previously arrested in arms-related cases but had been out on bail at the time of the Chandan Mishra murder.
Kolkata Police Crack Down on Urban Hideouts
The recent arrests have pushed Kolkata Police to initiate a citywide audit of guest houses, especially in areas like Anandapur, Kasba, and New Town, where fugitives often rent rooms using fake IDs. Housing societies have also been alerted after several incidents of unverified subletting and long-term stays without police clearance.
A senior STF officer said:
“We are revisiting the tenant verification process. Many guest houses and PG accommodations are operating under minimal scrutiny. This has to change.”
The case has triggered alarm in several housing complexes, particularly in New Town, where residents recently raised concerns about unchecked rentals and safety.
Larger Network, Broader Investigation
Police are now focusing on the broader criminal ecosystem. According to internal reports, Bihar-based arms smugglers had already made inroads into Bengal through channels in Burdwan, Murshidabad, and North 24 Parganas.
In March 2025, the Bengal STF arrested an illegal arms dealer, Chand Ali Sheikh, from Burdwan who was allegedly connected to both Tausif’s gang and other Bihar-based syndicates. Multiple firearms and country-made pistols were seized, hinting at a deep-rooted network.
The murder of Chandan Mishra may just be one of several crimes orchestrated through such networks.
Judicial Developments & Transit Procedures
Following the arrest of the four accused in Kolkata, they were handed over to Bihar Police after a hearing in Alipore court. The judge instructed officials to maintain proper legal procedures, including providing medical care during transport.
Their statements and mobile data are now key to tracing the missing gang members, suspected arms suppliers, and anyone financing the operations—especially a jailed gangster named Sheru Singh alias Onkar, believed to have funded the contract killing from inside Purulia jail.
Public Response and Policy Challenges
The revelations have led to calls for stricter vigilance on:
- Tenant verification
- Guest house monitoring
- Cross-border crime surveillance
Citizens’ groups and resident associations across Kolkata’s suburban pockets have demanded regular police liaison and quarterly verification of long-term tenants in complexes like those in New Town and Rajarhat.
Senior Kolkata Police officials are reportedly considering the use of AI-powered tenant verification apps, data-sharing with Bihar STF, and random guest house inspections to address the loopholes.
Conclusion: A Wake-Up Call for Urban Policing
The capture of Bihar gangsters operating in Kolkata is not just a win for law enforcement—it is a wake-up call for the city. Criminals are no longer bound by borders; they now operate in inter-state circuits, exploiting loopholes in urban infrastructure, lax regulation, and digital anonymity.
Kolkata’s transformation into a safe house for criminals from other states points to deeper structural vulnerabilities. This case, involving one of Patna’s most feared underworld figures, underscores the urgent need for proactive policing, smarter surveillance, and stronger citizen cooperation to safeguard the city’s urban landscape.
As the investigation expands, both Kolkata and Bihar police will need to sustain joint operations—not just for arrests, but to dismantle the very architecture that enables such crimes.
Official External References
For more information on procedural safeguards, legal rights, and judicial oversight in custodial cases, refer to:
- National Human Rights Commission of India
- Ministry of Home Affairs – Custodial Guidelines
- Law Commission of India Reports on Custodial Crimes
- Supreme Court of India – D.K. Basu vs. State of West Bengal Judgment
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