The weather office has warned of more thunderstorms in north, north-east and parts of south India for the next two days after Sunday's thunderstorm and dust storm left behind a trail of destruction in four states, killing over 70 people and injuring many, according to the Union Home Ministry. Thirty nine people have died in Uttar Pradesh alone, while nine were killed in Andhra Pradesh on Sunday. The storm brought down walls, uprooted trees and snapped power connection in many regions. More than 70 incoming flights were diverted from Delhi's Indira Gandhi International Airport last evening. The violent weather affected train and metro services in Delhi and its suburbs.