Guwahati, July 1 -- By Arathi Menon/Mongabay

Heavy monsoon rains have led to flash floods and landslides across India's northeast states, leaving at least three people dead in Arunachal Pradesh, inundating villages in Assam, damaging infrastructure across several states and prompting fresh warnings of more extreme rainfall in the coming days.

Arunachal Pradesh was the first to get hit with flash floods triggered by intense rainfall striking Keyi Panyor district on June 24, washing away homes, roads and bridges, particularly around the Panyor Hydel Project colony near Yazali.

Media reports suggest that thousands of people across 12 of Arunachal Pradesh's 28 districts have been affected to varying degrees as floods triggered by incessant...