Nigeria: Curfews as fresh unrest rocks two Nigerian cities

Gunfire and rioting rocked two northern Nigerian cities Tuesday in a fresh round of unrest, prompting authorities to slap curfews on both after weekend violence killed 52 people. The unrest broke out in the cities of Kaduna and Damaturu, adding to fears of spiralling violence in the country's north, where Islamist group Boko Haram's insurgency has been concentrated.