At least four workers have died after an avalanche swept away a large construction crew working on a highway near India’s mountainous border with Tibet, the Indian army said Saturday. The incident took place near the Mana Pass in northern Uttarakhand state on Friday.

A massive search and rescue mission is underway after dozens of workers became trapped or missing after a massive avalanche in India on Wednesday.

Rescuers were racing against time to search for more than 20 construction workers missing after an avalanche in India's Himalayan state of Uttarakhand on Friday following heavy snowfall, the army