India, April 29 -- Three suspected members of banned militant group National Socialist Council of Nagaland (NSCN) have been killed in Assam's Dima Hasao district during an encounter with police on Tuesday, officials said.

According to the police, the suspected militants were trying to extort money from some construction agencies working on a government project. They had also sent a letter to the office of National Highways Authority of India (NHAI) in Haflong on Saturday demanding a big amount of money, officials said.

Officials said that they had received information from a reliable source that the militants were hiding in Hera Kilo and Nriachibunglow area near Haflong.

"During a search operation in that area, the armed miscreants fir...