New Zealand House in Kings Cross, London has been evacuated following an explosion and subsequent fire.
As many as 700 people were evacuated after a gas canister being used for a barbecue exploded.
The incident occurred at 19:30 on Wednesday evening during celebrations surrounding the London 2012 Olympic Games.
Two fire engines were called to the scene, with ten fire-fighters tackling the blaze.
London Ambulance Service said one person had minor injuries and was treated at the scene.