A woman was killed and three others, including a minor girl, were injured when some militants fired at Tolen village in Manipur's Churachandpur district, police said in Imphal on Thursday.
The deceased was identified as Hlainun Moite, 25.
Militants fled from the spot before the police arrived on Wednesday night. The motive of the attack was not known, sources said.
The injured were admitted at the Regional Institute of Medical Science Hospital in Imphal, sources added.