Two explosions hit northern Nigeria city

Two blasts have hit the northern Nigerian city of Zaria, according to local emergency services.

They did not give any reports of casualties.

At least one of the explosions targeted a church in the city, which lies in the northern Nigerian state of Kaduna.

Last week the radical Islamist group Boko Haram attacked two church services, sparking violence which killed seven people. Hundreds have died in its previous attacks on churches.

Nigeria's National Emergency Management Agency (Nema) said the blasts happened in the Wusasa and Sabon-Gari districts of Zaria, the AFP news agency reports.

Boko Haram has previously justified attacks on churches by saying they were carried out in revenge for killings of Muslims in central Nigeria during earlier bouts of violence.