The Kaduna State Government has imposed a 24-hour curfew on Kaduna and Zaria metropolis.
According to a Monday statement by the Commissioner for Internal Security in Kaduna, Samuel Aruwan, this became necessary after the government reviewed the security situation in the state.
Kaduna is one of the states where the ongoing nationwide protests turned violent.
“There is sufficient evidence to clearly indicate that the ongoing protest has been hijacked by criminal elements who have resorted to looting of shops and destruction of private and public property,” Mr Aruwan wrote.
The protests, which began on Monday, have led to deaths in some states such as Kaduna, Kano and Borno.
Amnesty International reports at least 13 deaths from the protests, largely caused by the police, although the police dispute that account.
The protesters are demanding economic and political reforms, including the reversal of some government policies, such as the removal of petrol subsidies.
The Bola Tinubu administration’s policies have contributed to Nigeria’s worst cost-of-living crisis in a generation.