Flag-waving crowds headed towards the national assembly in the capital, Abuja, as people gathered again to block traffic on key roads in the largest city, Lagos.
The army released a statement as demonstrators took to the streets to keep up pressure in a campaign that forced the government to announce the dissolution of a notorious police unit, the Special Anti-Robbery Squad (SARS).
The military warned “all subversive elements and troublemakers” and said it “remains highly committed to defend the country and her democracy at all cost”.
The Nigerian army added it “is ready to fully support the civil authority in whatever capacity to maintain law and order and deal with any situation decisively”.