S. Bhattacharjee

Sustained enforcement by Indian anti-narcotics agencies has forced Myanmar-based drug trafficking syndicates to abandon many of their traditional cross-border smuggling corridors, pushing them towards remote forests, riverine stretches and difficult terrain along the India-Myanmar border in a bid to evade detection.

Officials from the Narcotics Control Bureau (NCB) and intelligence agencies say the changing tactics reflect the growing pressure on international drug networks following an intensified crackdown by law enforcement over the past two years. The NCB’s Guwahati and Imphal zonal units, in particular, have stepped up surveillance and interception operations, resulting in several major seizures of heroin, methamphetamine and other narcotics during 2025 and 2026.

While the volume of trafficking attempts has not diminished significantly, officials say the methods employed by smugglers have evolved rapidly as conventional routes come under tighter surveillance.

Traditional routes no longer safe

For years, traffickers relied on established crossing points and familiar transit corridors connecting Myanmar with India’s northeastern states. However, enhanced monitoring, coordinated intelligence operations and increased patrols have made those routes increasingly risky.

According to officials, drug syndicates are now directing couriers through dense forests, mountainous terrain and isolated river channels where surveillance is more difficult and security forces face significant logistical challenges.

“With conventional routes remaining under constant watch, traffickers have increasingly shifted to forested and riverine areas where monitoring is considerably more challenging,” an official involved in anti-narcotics operations said.

The India-Myanmar border stretches through rugged hills, thick forests and sparsely populated regions, making comprehensive surveillance a difficult task. Smugglers exploit this challenging geography to avoid security checkpoints and law enforcement patrols.

Weather becomes an ally

Officials say traffickers have also adapted their timing to exploit adverse weather conditions.

Drug couriers frequently move consignments during the night, while heavy rainfall and poor visibility associated with the monsoon season often provide additional cover for their movements. Such conditions complicate aerial surveillance, restrict mobility for security personnel and make ground operations significantly more difficult.

The difficult terrain, coupled with unpredictable weather, continues to present one of the biggest operational challenges for agencies working to intercept cross-border narcotics consignments.

Heroin and methamphetamine remain dominant

Investigators say heroin and methamphetamine continue to account for the bulk of narcotics trafficked from Myanmar into India.

Myanmar remains part of the notorious “Golden Triangle” region, one of the world’s most significant centres for illicit drug production. The country’s ongoing political instability and the presence of armed groups in several border regions have complicated efforts to curb narcotics production and trafficking.

Officials believe substantial quantities of narcotics continue to enter India’s northeastern states before being transported to other parts of the country through well-organised distribution networks.

A highly compartmentalised trafficking network

Intelligence officials describe the cross-border drug trade as a sophisticated, multi-layered supply chain designed to conceal the identities of those involved and minimise the risk of exposing higher-level operators.

Once narcotics are produced or assembled within Myanmar, consignments are first transferred to cross-border couriers responsible for transporting them across the international boundary.

The drugs are subsequently handed over to transport coordinators, who arrange movement through various transit points. Local facilitators then provide logistical support, including temporary storage, transportation and communication, before the narcotics eventually reach receivers responsible for distribution in domestic markets.

“Each participant performs a specific role within the network, making it extremely difficult to penetrate the entire supply chain,” an Intelligence Bureau official said.

Officials say the distribution network extends well beyond the border states, with Assam and Manipur serving as important transit points before narcotics are moved to markets across India.

The compartmentalised structure also means that the arrest of individual couriers rarely leads investigators directly to cartel leadership, making long-term intelligence gathering essential for dismantling entire networks.

Illegal financial channels sustain operations

Beyond the physical movement of narcotics, investigators say the financial infrastructure supporting the trade is equally sophisticated.

Money collected from buyers is allegedly channelled back to Myanmar-based cartels through informal and illegal financial networks operated by intermediaries who often remain outside the reach of investigators.

These underground systems enable traffickers to transfer large sums without relying on formal banking channels, making financial tracking and asset recovery particularly difficult.

Officials believe dismantling these financial networks will be as important as intercepting drug consignments if authorities hope to significantly disrupt the operations of international trafficking syndicates.

Human couriers still dominate Myanmar route

Security agencies point to a significant operational difference between narcotics trafficking along the India-Myanmar border and the India-Pakistan border in Punjab.

In recent years, Pakistan-based smugglers have increasingly relied on drones to transport narcotics, weapons and other contraband across the international border, presenting a new technological challenge for security agencies.

In contrast, Myanmar-based trafficking networks continue to depend largely on human couriers carrying consignments through forests, mountain tracks and remote villages.

“Unlike the Punjab border, where drone technology has become a major factor, the Myanmar route still relies heavily on people physically transporting narcotics through difficult terrain,” an official said.

This dependence on human networks makes investigations particularly complex, as agencies must identify and track multiple individuals operating at different stages of the trafficking chain.

Continuous surveillance required

Officials acknowledge that eliminating cross-border drug trafficking will require sustained operations over a long period.

Unlike isolated criminal cases, narcotics trafficking involves interconnected networks operating across multiple jurisdictions, requiring close coordination among central agencies, state police forces and intelligence organisations.

Enforcement agencies must simultaneously monitor border crossings, transportation routes, communication channels and financial transactions while gathering intelligence on cartel operations within Myanmar.

The challenging terrain, limited infrastructure in some border areas and the constantly evolving tactics of traffickers add further complexity to anti-narcotics operations.

Arrest of alleged international supplier

Investigators recently secured what they describe as a significant breakthrough with the arrest of Nengzatuan alias Tuanpi, a resident of Haichin in Myanmar’s Chin State, in Manipur.

Wanted in connection with multiple narcotics cases, Tuanpi is believed to be an important international supplier associated with Myanmar-based drug syndicates.

Officials say his arrest could provide investigators with valuable insights into the organisational structure of trafficking networks operating between Myanmar and India.

According to investigators, Tuanpi is suspected of having knowledge of supply routes, logistics, communication methods and the identities of several individuals involved in cross-border drug trafficking.

“He is not a low-level operative. Information gathered during his interrogation is expected to help investigators understand the functioning of major supply chains and how narcotics entering India are subsequently moved through domestic and international distribution networks,” an official said.

Authorities expect the investigation to shed light on the routes currently being used after traffickers abandoned traditional corridors under increasing law enforcement pressure.

Strengthening the fight against cross-border narcotics

Officials believe intelligence obtained from recent investigations, including the arrest of key operatives, will strengthen ongoing efforts to disrupt Myanmar-based drug syndicates.

The changing tactics adopted by traffickers underscore the need for continuous adaptation by enforcement agencies. As security forces increase surveillance along one route, syndicates often respond by identifying alternative pathways, making the fight against narcotics trafficking an evolving challenge.

With northeastern states remaining a critical gateway for drugs entering India from the Golden Triangle, agencies are expected to further enhance intelligence-led operations, strengthen inter-agency coordination and expand surveillance across vulnerable stretches of the India-Myanmar border.

Authorities maintain that sustained enforcement, combined with intelligence-driven investigations targeting both trafficking networks and their financial infrastructure, remains the most effective strategy for weakening the influence of international drug cartels operating along India’s eastern frontier.