Story highlights Three attackers open fire at market in India's Assam state, police say

Attackers suspected of being part of separatist group India considers terrorist

New Delhi (CNN) At least 14 people were killed Friday when assailants attacked a market in the northeastern Indian state of Assam, authorities said.

Fifteen others were hurt in the attack, including 12 with serious injuries, according to P.K. Bhagwati, deputy police commander.

Three attackers opened fire about 11 a.m. at the market in Kokrajhar, authorities said. The army killed one of the assailants, and authorities are looking for the other two, the official said.

The attackers are believed to be part of the National Democratic Front of Bodoland, a Christian separatist group that India has classified as terrorist, Bhagwati said.