Kano - Gunmen on a motorcycle shot dead four traders from the mainly Christian Igbo ethnic group in northeastern Nigeria on Monday, residents said, the latest in a string of such attacks.
Islamist group Boko Haram has carried out scores of shootings and bomb attacks in northern Nigeria, but it was not immediately clear who was behind Monday's killings in the city of Yola, the capital of Adamawa state.
Police could not be reached for comment.
“Two men riding a motorcycle came by some shops owned by Igbo traders,” one resident said.
“They shot dead the four men chatting outside their closed shops around 3:30 pm. Igbos in the city had refused to open their shops in protest over the killing of a bartender in a beer parlour last night by some gunmen.”
In January, gunmen opened fire on worshippers at a church in Yola, killing at least eight people.
Boko Haram's insurgency has taken more than 1 000 lives since mid-2009. - Sapa-AFP