More than 200 people remain missing a day after flash floods in Uttarakhand's Chamoli district. So far, 20 bodies have been recovered. The flash floods were caused by a glacier burst in the upper reaches of the Himalayas. The resulting avalanche and deluge in the in the Alaknanda river system washed away a hydroelectric station and five bridges. Another hydroelectric station has been severely damaged. Multi-agency rescue work is on in the state as the authorities evacuated thousands of people from the affected areas. Prime Minister Narendra Modi, Union Home Minister Amit Shah and BJP chief JP Nadda have discussed relief efforts and future course of action with MPs from the state.