Ahmed Inga, director-general of the Niger State Emergency Management Agency, confirmed this in a statement, saying the mother of the minors also sustained injuries in the incident.
Inga revealed that she was recovering, saying the government would take full responsibility of her upkeep.
“The owner of the collapsed wall was given a warning by the neighbours over the poor structure of the wall, but he refused to yield to the advice,” he said.
“It was not windstorm that led to the collapse of the wall, but the poor way in which it was built.”
Inga appealed to residents to respect government laws, saying appropriate punishment awaited any act of negligence displayed by owners of buildings or contractors.