A suspected gas explosion on Monday triggered a collapse inside a tunnel that was under construction at a hydropower project in India's northeastern Himalayan state of Sikkim, leaving at least 11

A suspected gas explosion on Monday triggered a collapse inside a tunnel that was under construction at a hydropower project in India's northeastern Himalayan state of Sikkim, leaving at least 11

A suspected gas explosion has caused a tunnel collapse at a hydropower project in India's Sikkim state, near the Chinese border, leaving at least 11 people dead and 14 missing.