Lagos, Nigeria (CNN)A 24-hour curfew has been imposed in the Nigerian state of Kaduna, where police said at least 55 people were killed in communal clashes.
Nigeria's President Muhammadu Buhari on Sunday said special security forces have been deployed to hotspots in the state's capital to restore calm.
Buhari said he found the frequent outbreaks of bloodshed in the country "worrisome."
"The disregard for the sanctity of human life is unacceptable. Violence is an ill-wind that blows nobody any good," Buhari said in a statement as he called on various communities to shun violence and live peacefully.
Police said 22 people were arrested in connection to the crisis, which occurred after riots broke out among youths in a local market in the town of Kasuwan Magani last Thursday.
Locals say the number of deaths is higher than the official figures reported by police and that the attacks were still ongoing despite the curfew yesterday.
One resident of Kazah Bulus told CNN "When we closed from church yesterday (Sunday) on my way home, I saw people running everywhere, they heard that people were being attacked. On my way home, I saw dead bodies. Shops and houses were burnt down."
The all-day restriction in the Kaduna capital is to prevent further clashes and panic among residents, state governor Nasir El-Rufai said.
El-Rufai who visited affected the areas following the attacks vowed the state would prosecute those responsible for the killings.
"We must live in peace and never use violence to solve a problem. We are not happy with this and government will pursue and punish those responsible for this devilish act," El-Rufai said.