Kazakhstan declared emergencies in the capital, main city and provinces on Wednesday after demonstrators stormed and torched public buildings.
The Cabinet resigned but that failed to quell the anger of the demonstrators, who have taken to the streets in response to a fuel price increase from the start of the new year.
Almaty's police chief said the city was under attack by "extremists and radicals", who had beaten up 500 civilians and ransacked hundreds of businesses.
A presidential decree announced a two-week state of emergency and nighttime curfew in the capital Nur-Sultan, citing "a serious and direct security threat to citizens".
States of emergency were also declared in Almaty and in western Mangistau province, where the protests first emerged in recent days.
Authorities appeared to have shut the country off the internet as the unrest spread.
Kazakhstan's reputation for political stability under three decades of one-man rule by former leader Nursultan Nazarbayev helped it attract hundreds of billions of dollars of foreign investment in its oil and metals industries.
The price of its dollar bonds plunged by nearly 6 cents, the worst showing since the height of the coronavirus market collapse of 2020.
Eight people, including four children, were injured in a shooting in the Coney Island area of Brooklyn, New York City, last night as Independence Day celebrations and fireworks displays were taking place.
After a storm-related delay, US President Donald Trump took the stage on the National Mall on Saturday to deliver a campaign-style speech to mark the country's 250th anniversary.
Russia's second city of St. Petersburg and the surrounding Leningrad region came under a large Ukrainian drone attack overnight on Saturday, with a local port and oil infrastructure struck, Russian and Ukrainian authorities said.