At least 20 workers have died in a tunnel collapse at an under-construction hydroelectric project in Sikkim's Namchi district, as rescue teams battle toxic gas to locate survivors.
Five workers are still missing
Jul 22, 2026
10:46 am
What's the storyThe death toll from the tunnel collapse at the NHPC Teesta Stage-VI Hydroelectric Project in Sikkim's Namchi district has risen to 20.
The incident occurred on Monday afternoon when a sudden burst of methane trapped within the rock strata caused the explosion, releasing fumes and toxic gases inside the tunnel.
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