At least ten people have died and many are feared after the collapse of a building in the Nigerian city of Lagos.
The school, located on the top floor of the four-storey building in Ita Faji on the island of Lagos, had more than 100 students, a rescue officer told the BBC.
About 40 students were taken out alive, said the official.
The building was said to be "desperate" and was earmarked for demolition, Lagos officials said.
The collapse occurred around 10:00 local time (09:00 GMT). There were wild scenes on the scene when rescuers and local men searched for survivors, and family members crowded the area, hoping to find their loved ones alive.
The collapsed building was a block of flats with several homes and the school, residents and rescue workers at the scene, the BBC said.
Emergency teams ripped several injured students out of the rubble, but many worried parents could not find their children while others went to a local hospital to look for them.
Men from the area supported the rescue workers, but large crowds obstructed the rescue operation.
Mohammed Muftau, a resident who witnessed the collapse, told the BBC that the building had been cracked for a long time and complaints had been made.
The State Building Inspectorate of Lagos confirmed to the BBC that the building had been marked and demolished. It is not unusual for buildings in Nigeria to collapse. Materials are often below average and enforcement is lax.
In September 2014, 116 people died when a six-story building in Lagos collapsed during a worship service held by a famous televangelist. And in 2016, more than 100 people died when the roof of a church in Uyo in southern Nigeria collapsed.
At Lagos Island General Hospital, there was chaos as parents and family members climbed after each ambulance looking for a loved one. Many of the victims were children in school uniforms.
The deputy governor of Lagos, Idiat Oluranti Adebule, visited the hospital and expressed his condolences to the families of the victims and asked for rest.
"We ask for your understanding that the Rescue Team can do its job … so that the medical team can act promptly and promptly once the patients are admitted," she told the BBC.
President Muhammadu Buhari expressed his condolences to the families of the victims.
"It is an impetus to lose valuable lives with every mishap, especially among the young and tender," he said. "May God grant strength and support to all who are affected by this sad incident."
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