The special operation was planned and launched on Thursday based on specific intelligence developed by the BSF, it said.
The joint team intercepted four suspected vehicles on the Aizawl–Champhai highway (NH-6), between Keifang and Seling villages, approximately 60 km from Aizawl.
During the search, three plastic bags containing 50 packets filled with about 50 kg (5 lakh tablets) of methamphetamine (Yaba) were seized, the statement said.
In addition, three soap cases containing 36 grams of heroin were also recovered.
The combined value of the seized narcotics is estimated at over ₹75 crore. Eight people were arrested, and four vehicles used for transporting the contraband were seized during the special joint operation.
This major success highlights the synergy and seamless coordination between the BSF, NCB, and the Excise and Narcotics Department, whose joint efforts ensured the disruption of a significant narcotics trafficking attempt along the vulnerable Mizoram–Myanmar corridor, the statement claimed.
The operation reaffirmed the resolute determination of security and enforcement agencies to combat the menace of drugs, safeguard society, and protect youth from falling prey to narcotics smuggling networks, it said.
The BSF, in close collaboration with sister agencies, reiterated its unwavering commitment to the war on drugs and assured that such coordinated actions would continue with greater intensity to deliver decisive blows against organised drug trafficking syndicates operating in the region.