CNN —Twenty-one people died after a school building collapsed in central Nigeria while students were sitting an exam in what local authorities called an “avoidable tragedy.”The two-story building collapsed in the city of Jos and saw a further 30 people hospitalized, according to Nigeria’s National Emergency Management Agency (NEMA). NEMA said that students were amongst those who died in Jos, the capital of Plateau State, without providing an exact number. Around 120 people were trapped when the building collapsed, according to Plateau State government. The governor of Plateau State, Caleb Manasseh Mutfwang, said the building collapsed as students were sitting an exam. Building collapses are common in Nigeria due to lax construction standards and poor quality materials.

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Persons: ”, NEMA, Caleb Manasseh Mutfwang, Mutfwang Organizations: CNN, Emergency Management Agency, Plateau, St . Academy School Locations: Nigeria, Jos, Plateau State, ”