An explosion that ignited a fire at a petrol station in the Nigerian commercial capital, Lagos, has killed at least eight people, and has destroyed at least 25 homes, 16 shops and a primary school, the State Emergency Management Agency (Sema) has said.
After a building collapsed in the Nigerian city of Lagos, killing at least 11 people, including several school children attending a school on the building's top floor, we look at some reasons why such tragedies seem to occur so often in some African countries.
