An explosion in Chamoli district has left 17 people dead and several injured at the Namami Gange project site.
Uttarakhand chief minister Pushkar Singh Dhami ordered an enquiry and Union Home Minister Amit Shah declared a compensation of Rs 5 lakh for kin of the deceased.
President Droupadi Murmu and Prime Minister Narendra Modi expressed grief and assured all possible support to the state government.