Updated - Dec. 3, 2:35 a.m. ET:
Nine people died in the crash, reports the BBC.
Three of them were in the helicopter, Sir Stephen House of the Scottish police told a press conference.
All nine victims have now been named — David Traill, the civilian pilot, 51; Kirsty Nelis, the police constable, 36; Robert Jenkins, 61; Mark O'Prey, 44; Colin Gibson, 33; John McGarrigle, 57; Tony Collins, 43; Samuel McGhee, 56; from Glasgow; and Gary Arthur, 48, from Paisley.
The helicopter crashed through the roof of the Clutha Vaults pub, Stockwell Street, Glasgow. The tail of the chopper is visible in this photo.
Labour MP Jim Murphy was at the scene and reported multiple injuries.
U.K. Prime Minister David Cameron offered his condolences on Twitter:
He would later thank the emergency services.
He also paid tribute to the bravery of the "ordinary Glaswegians who rushed to help."
As did the First Minister.
Gordon Smart, editor of The Sun's Scottish edition, saw the crash. He told Sky News:
There was no fire ball and I did not hear an explosion. It fell like a stone. The engine seemed to be spluttering.