It is terrible. Parents are crying. I can’t withstand the gory sight,” the resident, Prince Adams, added .
At least four people have been killed and as many as 100 children are feared trapped after a building, home to a primary school and kindergarten, collapsed in Nigeria's commercial capital, Lagos.
The governor of Lagos state said on Wednesday that some people have been killed, but official numbers have not yet been released.
"We have rescued about 25 people, some already dead," said governor Akinwunmi Ambode.
The incident took place near Itafaji market on Lagos Island at around 10:00am local time (0900 GMT).