Survival chances for the trapped workers were slim, state disaster management official Rajiv Roka said, as rescuers had to battle the fumes, making their task difficult.

Twelve workers are trapped in a Sikkim tunnel after a landslide, complicating rescue efforts due to a suspected gas leak.

Twenty-seven workers are trapped inside a Sikkim tunnel after a landslide blocked its entrance. Rescue operations are complicated by a suspected gas leak, affecting personnel.…