Two people have died and nine people were injured when a helicopter crashed into a crane in central London and plummeted to the ground.
Witnesses reported seeing debris falling from the sky after the aircraft struck the crane before exploding into flames and plunging to a street near Vauxhall station in rush hour.
Metropolitan Police commissioner Sir Bernard Hogan-Howe confirmed that there were two deaths, one person critically injured and a number of others with less serious injuries.
London Fire Brigade station manager Bruce Grain, one of the first firefighters at the scene, said it "was absolute chaos" but he revealed the fire was put out within 20 minutes.
Eight fire engines, four fire rescue units and around 60 firefighters plus officers attended the scene of the crash, a few hundred yards from MI6, on a busy road.
Firefighters rescued a man from a burning car and brought a blaze caused by the crash under control. Four fire engines and two fire rescue units also attended reports of a crane in a precarious position. The brigade was called at 8am.
The crane was on top of a building called The Tower in the St George Wharf development, and is billed as one of Europe's tallest residential towers.
Video footage shot on a mobile phone showed an entire road blocked by burning wreckage and aviation fuel. The side of a building on one side of the street was also damaged by the flames. Passers-by stood watching as the wreckage burned. A motorcycle was seen lying on its side in the road where it was abandoned.
Paul Ferguson, who was working in an office near the incident, told BBC News: "There was a flash and the helicopter plunged to the ground. It exploded and you can imagine the smoke coming out of it. It may be that on this misty morning the lights on nearby St George Tower weren't on and it moved and clipped the edge of the crane and lost control."
The aircraft is understood to be an AgustaWestland AW109, a lightweight, twin-engine helicopter with eight seats.