A suicide blast in a street full of bars and restaurants in the northern Nigerian city of Kano has killed four people, police say.
One of those killed was a girl aged 12, they say.
Witnesses say the explosion was caused by a bomb in a car in Sabon Gari.
The area has previously been targeted by Boko Haram Islamist militants but it is the first attack on Nigeria's second biggest city for several months.
More than 1,000 people have been killed in Boko Haram attacks this year but the government has said it has pushed the militants back into their strongholds in the north-eastern Borno state.
This is where they seized more than 200 girls last month, in a case which shocked the world and prompted foreign powers to send military advisors to assist Nigeria's army tackle the insurgency.