The National Investigation Agency (NIA) on Sunday, April 26, arrested a prime accused in the West Bengal bomb explosion case, marking a significant breakthrough in the investigation into a deadly blast that claimed one life and left three others critically injured earlier this year. The arrested individual has been identified as Ahidul Islam Molla, a resident of Bijoyganj Bazar area in South 24 Parganas district, West Bengal.

Who Is Ahidul Islam Molla and What Was His Role

Ahidul Islam Molla was apprehended by the NIA following a thorough and detailed examination of his involvement in the explosion, which occurred in March 2025 at Dakshin Bamunia village in West Bengal. Investigators established that Molla was a co-conspirator in the criminal plot, directly involved in the preparation of improvised explosive devices and the subsequent destruction of evidence to conceal the crime.

This arrest marks the second in the case. An earlier accused had been apprehended by the West Bengal state police in the initial phase of the investigation, before the NIA took over the probe.

How the Bomb Blast Unfolded at Dakshin Bamunia

According to the NIA's official statement, the bombs detonated prematurely — while they were being assembled as part of the conspiracy — killing one of the accused individuals involved in the bomb-making operation itself. Three other persons sustained serious injuries in the accidental explosion.

The incident raises serious concerns about the organised manufacture of crude bombs in rural West Bengal, a pattern that security agencies have flagged repeatedly over the past several years. South 24 Parganas has historically been a region of heightened political and criminal violence, and this case adds to a troubling trend of illegal explosive manufacturing in the state.

The NIA confirmed that its investigation is actively continuing to identify and apprehend other co-accused individuals who may have been part of the wider conspiracy.

NIA Also Files Charges in Bihar Illegal Arms Smuggling Case

In a separate but equally significant development, the NIA earlier this month filed a supplementary charge sheet against Kundan Kumar alias Kundan Bhagat, a resident of Muzaffarpur, Bihar, in connection with a 2024 Bihar illegal weapons smuggling case. The charge sheet was filed before the NIA Special Court in Patna.

Kundan Kumar, who was arrested by the NIA in November 2025, was found to be actively engaged in the illegal procurement and smuggling of prohibited bore weapons from Nagaland. He becomes the sixth accused to be charge-sheeted in this case, which originated with the Bihar Police's seizure of an AK-47 rifle along with a scope lens.

Investigations revealed that the weapons were being channelled to Maoists and organised criminals in Bihar, pointing to a deeply entrenched nexus between arms traffickers and left-wing extremist networks. The charge sheet invokes provisions of the Indian Penal Code (IPC), the Arms Act, and the Unlawful Activities (Prevention) Act (UAPA).

Timeline of Accused in the Bihar Arms Case

The Bihar arms smuggling case has seen a methodical expansion of its accused list. Four individuals — Vikash Kumar, Devmani Rai, Satyam Kumar, and Ahmad Ansari — were originally charge-sheeted by the NIA in May 2025. A fifth accused, Manjoor Khan, was charged in February 2026, and now Kundan Kumar brings the total to six.

This pattern of incremental charge-sheeting reflects the NIA's strategy of systematically dismantling the supply chain of illegal arms feeding insurgent and criminal networks across eastern India.

Broader Implications for Internal Security

The near-simultaneous developments in both the West Bengal bomb case and the Bihar arms smuggling case underscore the NIA's intensified focus on disrupting networks that manufacture or traffic weapons for use in politically motivated or Maoist violence. Notably, both cases involve states that have historically grappled with extremist activity and political crime.

Security analysts note that the crude bomb-making networks in Bengal and the arms pipeline from Nagaland to Bihar's Maoist belt represent two distinct but equally dangerous threats to civilian safety and democratic processes. The NIA's proactive approach in both cases signals a broader federal push to contain these threats ahead of upcoming state-level political cycles.

As investigations in both cases continue, further arrests and charge sheets are expected in the coming weeks, with the NIA likely to trace higher links in both conspiracy chains.