At least seven people have been killed and dozens injured in a suicide bombing during Mass at a Catholic church in northern Nigeria, officials say.

An explosive-laden vehicle drove into the church and detonated its load, ripping a hole in the wall and roof.

The attack happened in Kaduna, which has been targeted by Islamist militant group Boko Haram in the recent past.

President Goodluck Jonathan promised to "redouble" his government's efforts to tackle terrorism and violence.

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He's going to 'redouble' efforts...What the heck does that even mean? Dude is so clueless...And he's going to start campaigning for a 5th term next...