An explosion occurred in a tunnel, believed to have been triggered by methane released from rocks, resulting in dense fumes and toxic gases that trapped 25 individuals. This happened at an under-construction tunnel in a hydropower project in Samardung, India, on Tuesday.
On July 23, 2026, at 4:05 AM EDT, Reuters reported that the state government of Sikkim confirmed the recovery of at least seven more bodies from the tunnel. This tragic incident has claimed 22 lives so far.
The explosion took place at the National Hydroelectric Power Corp Ltd.’s project on the Teesta River in Samardung village. The blast filled the tunnel with hazardous gases, trapping workers and officials inside.
Rescue operations are ongoing. Specialized teams are working together to locate and recover those still missing. In a social media update, the Sikkim state government mentioned that rescue operations are being meticulously coordinated to save lives.
Authorities have indicated that the chances of survival for those trapped in the tunnel are minimal.
Efforts to rescue the trapped individuals are challenged by accumulated mud and water within the tunnel. Additionally, the presence of toxic gases has complicated breathing conditions for rescue teams.
The National Hydroelectric Power Corp Ltd. announced on Wednesday that an ex-gratia relief of 500,000 Indian rupees ($5,178) would be provided to the families of the victims.
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