Fresh clashes broke out in Chile's capital Santiago on Sunday after two people died when a supermarket was torched overnight as violent protests sparked by anger over economic conditions and social inequality raged into a third day.
Police and the military fired tear gas and used water cannons against protesters.
Nearly 10,000 soldiers have been deployed while an overnight curfew was imposed on Santiago and a state of emergency called in five regions.
Interior and Security Minister Andres Chadwick said two women burned to death in the blaze at a store owned by US retail chain Walmart in the early hours of Sunday.
The third victim, who authorities initially had said had died in hospital, suffered burns on 75 per cent of her body.
The deaths were the first in the worst unrest since Chile returned to democracy in 1990, following the dictatorship of General Augusto Pinochet.
Chadwick said two people suffered gunshot wounds following a clash with police who responded to a report of looting
