Twelve people have died and thousands displaced in incessant rains in some parts of Nagaland in the past one month with chief minister Neiphiu Rio seeking Central help on Wednesday even as several other north-eastern states have seen deficient rainfall this monsoon season.

“The damage this year is unprecedented in the history,” said Temjen Toy, Chief Secretary, Nagaland, the state that had contributed Rs one crore for Kerala flood relief earlier this month.

Starting late July, the hilly state has seen the rains wrecking havoc, which 12 people lost their lives and more than 3000 families have been displaced in around 400 villages, Nagaland State Disaster Management Authority said..