Venezuelan secret service agents have raided the offices of opposition leader Juan Guaidó while he is on a visit to the UK.
Footage showed hooded and armed officers from the Sebin service outside the building in Caracas.
“Cowardly dictatorship!” tweeted Mr Guaidó, who held talks with Prime Minister Boris Johnson in London.
Mr Guaidó is recognised by more than 50 countries, including the UK and the US, as the legitimate leader of Venezuela.
However, President Nicolás Maduro, who enjoys the support of the Venezuelan military, has managed to remain in power.
Opposition MPs said they had been prevented from entering the offices by Sebin agents.
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