A bomb blast in the northern Nigerian city of Kaduna has killed at least 25 people, police say.
The bomb targeted moderate Islamic cleric Dahiru Bauchi who escaped unhurt, police added.
Soon after the explosion, another blast could be heard in Kaduna, but details remain sketchy, a BBC reporter says.
Militant Islamist group Boko Haram has carried out a wave of bombings and assassinations in Nigeria since it launched a brutal insurgency in 2009.
It often targets Muslim leaders opposed to its militant ideology.
There are body parts and damaged cars on the busy Alkali Road in the city centre where the bomb targeting Mr Bauchi exploded, reports the BBC’s Abdullahi Kaura Abubakar from the scene.
A trader, Yusuf Suleiman, told Reuters news agency that he had counted 15 bodies in a police van.
Mr Bauchi had completed a preaching session in the nearby Murtala Muhammed square, and his convoy was driving through the area when the blast occurred.
In May, the emir of the northern area of Gwoza, Shehu Mustapha Idris Timta, was shot dead in an attack blamed on Boko Haram.
In January 2013, the then-emir of Kano, Al Haji Ado Bayero, survived an assassination attempt.
Source: BBC