The Mayor of London is praising emergency services for their quick response to a fiery rush-hour helicopter crash that's left two people dead.
The chopper smashed into a crane in foggy weather conditions, sending debris through the air and onto commuters below.
Sky News reports the pilot and a person on the ground were killed in the smash, another 13 were injured.
Boris Johnson says an investigation has been launched into the crash, but he has nothing but praise for emergency services who rushed to the scene.
"The most important thing is to pay tribute to the work of the emergency services. The first fire appliance got here within four minutes. An incredible performance by the fire brigade, I really congratulate them on that. I think the police were here within eight minutes and the same goes for the London ambulance service.
"People will naturally want to know that we are doing our level best to make sure that London is protected from aviation accidents of this kind. Those are matters that are now being investigated by the Civil Aviation Authority."
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