Venezuelan President Nicolás Maduro has announced to close his country's border with Brazil tonight.

President Maduro announced in a televised address that he is also considering shutting the border with Colombia to stop the opposition bringing in relief.

Opposition leader Juan Guaidó is leading a convoy to the Colombian border from capital Caracas.

Earlier, Guaidó had declared himself interim leader during anti-government protests last month and is recognised by dozens of foreign states, including the US.