At least five people have been killed in a suspected suicide bomb attack outside a mosque in northeast Nigeria.
Security officials said the attack after Friday prayers on July 13 in Maiduguri appeared to target two local leaders who had condemned a recent series of attacks by the Boko Haram sect.
Maiduguri, a Boko Haram stronghold, has been a flashpoint for violence.
Nigerian President Goodluck Jonathan has declared a state of emergency in some parts of the state.
Based on reporting by dpa and Al Jazeera