Motorcycle-riding gunmen have sprayed bullets on a group of men playing draughts in the northern Nigerian hub of Kano, killing at least five and wounding two, police and residents say.
'We have just evacuated five dead bodies and two seriously injured people from the scene of the attack,' a police rescuer told AFP, adding that witnesses had counted nine attackers on three motorcycles.
Residents in the densely populated Dakata district of Kano confirmed the attack but could not provide details on the identity of the gunmen or their motives.
Kano police spokesman Magaji Majia confirmed the incident but did not give a casualty figure.
Draughts is a popular game in Nigeria and small crowds often form around two players who set up a board on a shady street-side or under a tree.
Earlier, gunmen believed to be from Islamist extremist group Boko Haram opened fire at a market in volatile northeastern Nigeria, killing 18 people, a local official said on Tuesday.
'Some gunmen came into the market yesterday afternoon and opened fire on a group of hunters,' local chief Abba Ahmed told journalists of the attack in Damboa.
'Eighteen people were killed in the attack.'
There were conflicting reasons given for the attack. According to Ahmed, there were claims that the Islamists were angry over the hunters selling meat such as pork forbidden in Islam.
Other residents however spoke of hunters in the area recently banding together to form a local vigilante group in response to robberies by Boko Haram members, sparking a revenge attack from the Islamists.
Also on Tuesday, the authorities in Kano, the largest city in northern Nigeria, banned moto-taxis in a bid to stem the tide of violent crime perpetrated by attackers riding mopeds.
The suspension followed a weekend gun attack on the convoy of the emir of Kano, Ado Bayero, an influential Nigerian Muslim figure, by men riding on mopeds in which five people were killed.