Nigerian state security officers visited CNN's office in Lagos on Monday, asking for proof that all CNN staffers working in the country were legally registered.
The three plainclothes officers left after a CNN staffer agreed to bring documentation to the local state security office later in the day. Nothing was taken from the bureau and no CNN staffers were detained.
After a later meeting with state security representatives, CNN received assurances that all documentation was in order.
The visit occurred as CNN was reporting extensively on unrest in Nigeria over the government's decision to adjust fuel subsidies. CNN's reporting efforts were not interrupted.