There has been heavy gunfire at the international airport in Kinshasa, the capital of Democratic Republic of Congo, a customs official has told Reuters.
It came minutes after witnesses reported gunmen attacking the headquarters of its state radio and television.
The official told Reuters: "Shooting has started here. They are shooting everywhere. We are all hiding."
More top news
The video, obtained by ITV News, shows scores of migrants desperately trying to board lorries in a restricted area within the tunnel.
Ex-Spitfire pilot Allan Scott, 94, said he was told off by the Queen when he first met her in 1943 when she was just 16.
Last minute preparations are going on at the Church of St Mary Magdalene where Princess Charlotte will be christened.