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, Indian army said Saturday.

Officials in India say more than 40 construction workers are missing after an avalanche hit their camp in Uttarakhand state.

Search teams in northern India had rescued 47 people trapped after an avalanche hit a remote border area but were still searching for eight more, officials said Saturday. A total of 55 workers were buried under snow and debris after the avalanche hit a construction camp near a village on the border with Tibet in Chamoli district on Friday.