The authorities deployed over 100 columns of the army and paramilitary forces in a bid to put the violence under control.
On Sunday, the army increased its surveillance in violence-affected areas through aerial means such as drones and the deployment of military helicopters.
In addition, a shoot-at-sight order was issued in “extreme cases”.
India’s federal home minister Amit Shah Monday told a local television channel that the situation in Manipur was under control.
Internet services remained suspended in the state and curfew continued to remain in place at various places.
On Monday, the authorities relaxed the curfew at a few places to allow people to purchase daily essentials. Some shops reopened in Imphal and cars were seen plying on roads.
Although life appears to be back to normalcy, locals said the tension remains palpable.
Officials said efforts to recover looted arms and ammunition from police armories were underway.