(A range of gangs and militant groups operate in southern Nigeria)
Five oil workers have been kidnapped in southern Nigeria’s oil-rich Delta region, officials say.
The three Britons, one Indonesian and one Romanian were reportedly abducted near the Exxon Mobil oil company’s offices in Eket town in Rivers state.
Oil workers are regularly abducted in Nigeria by gangs saying they want a bigger share of oil revenues.
The BBC’s Alex Last says the line between criminal gangs and political militants is often blurred.