Story highlights Agency reports 33 injured in addition to 26 killed, urges people to donate blood

State authorities ban "beggars and hawkers" on the streets after the attack

A bomb rips through government building in Zaria on Tuesday, witness says

Lagos, Nigeria (CNN) A bomb killed at least 26 people at a local government building in north-central Nigeria on Tuesday, authorities said -- marking the latest in a series of recent deadly attacks in a country where the government is battling the Islamic extremist group Boko Haram.

The bomb -- "most likely carried by a suicide bomber" -- exploded at a local government council's office in the Sabon Gari section of the city of Zaria, Kaduna state Gov. Nasir El-Rufai said.

Nigeria's National Emergency Management Agency reported that 26 people died and another 33 were wounded. The agency urged citizens to donate blood for those hospitalized.

The building was crowded because residents were welcoming the new chairman of Sabon Gari's interim management committee, El-Rufai said. That leader was taking office Tuesday, and other civil servants were being registered at the building.

A 2-year-old child was among the dead, the governor said.