Buildings have been set aflame and there are reports of gunfire in Nigeria’s biggest city after demonstrators were shot at a protest.
Witnesses and the rights group Amnesty International said several people were killed and wounded when soldiers opened fire in Lagos on Tuesday.
Authorities have imposed an indefinite round-the-clock curfew on the city and elsewhere, but some defied the order.
Protests against a police unit have been taking place for two weeks.
Demonstrators have been using the social media hashtag #EndSars to rally crowds against the Special Anti-Robbery Squad (Sars).