Authorities in Nigeria say that in the school building that collapsed on Wednesday, 20 people were declared dead, and most of them are children.
Jade Idris, health commissioner for Lagos, told the Associated Press that 43 more people were rescued alive.
Officials said that the three-storey residential building had been marked for demolition and that the school was operating illegally on the top two floors.
Rescue workers stopped their search on Thursday for some at the scene and said they had reached the foundations of the building without finding other victims.
Building collapses are ubiquitous in the West African nation, where new buildings often rise without regulatory bodies.
– FOLLOW News24 on twitter