A number of people taking part in a protest against police brutality have reportedly been shot dead or injured in Nigeria’s biggest city, Lagos.
A witness told the BBC he had counted about 20 bodies and at least 50 injured after soldiers opened fire. Amnesty International said it had obtained credible reports of deaths.
The authorities have promised an investigation into the shooting.
An indefinite 24-hour curfew has been imposed on Lagos and other regions.