Manipur Chief Minister reports 40 armed militants killed in security operations.
Security forces aim to bring peace to northeastern state experiencing ethnic rioting.
Two persons killed and 12 injured in recent instances of violence.
Combing operations to de-arm communities have commenced to restore peace.
Clashes primarily occur between Kuki militants and security forces.
Ethnic conflicts initially sparked by Meitei community's demand for Scheduled Tribe (ST) status.