Eyewitnesses have described the "terrifying" moment when a police helicopter spun out of control and plunged into a bar which was hosting a live music gig.
Grace MacLean was in The Clutha in Stockwell Street, Glasgow, and said people only became aware of the crash when the the ceiling of the venue started to cave in.
She told Sky News: "There was a band on, they were quite loud, and we just kinda heard a whoosh and some smoke.
"We looked around and no-one really knew what was going on. Everyone just carried on listening to the band.
Emergency services at the scene"And then we kind of looked again and the roof was gradually coming down.
"Someone started shouting and the band cut the music ... and then all of a sudden this cloud of dust came.
"You couldn't breathe for inhaling a mouthful of dust. You couldn't see anything. You were clawing at the walls to see where the exit is.
"No-one had a clue what was going on. There was no loud noise.
"People were helping each other out. Everyone started helping people who were hurt. People had some head injuries. Lots of people were covered in dust. There were lots of people shocked.
"No-one knew it was a helicopter crash until people told you."
Firefighters on the roof of the pub where the helicopter crash-landedLabour's international development spokesman Jim Murphy was one of the first people on the scene immediately after the crash and helped carry people out.
He said he saw a "pile of people clammering out" of the bar as he was driving past.
"I jumped out and tried to help," he said. "There were people with injuries. Bad gashes to the head. Some were unconscious."
Scores of passers-by in the area ran to the venue after seeing or hearing the aircraft go down.
Mr Murphy said people formed a human chain to help pass those that were unconscious out of the pub so that "inch by inch, we could get the people out".
Connor Gillies, from Radio Clyde News, told Sky News of the "scenes of chaos" and "continuous stream of sirens" in the area on Friday evening.
MP Jim Murphy helped people out of the venueMr Gillies described seeing "blood on the shirt" of Mr Murphy, who he said was "clearly very shaken, very upset by the whole thing".
Wesley Shearer, who posted pictures on Twitter of the scene, said there had been "talk of fatalities", but this has not been confirmed.
"This is unbelievable," he tweeted shortly after the crash. "Just spent 20 minutes pulling people out of the bar."
Jan Hollands, who also tweeted pictures from the scene, said she heard the crash and described it as "scary".
Gordon Smart, editor of the Sun's Scottish edition, witnessed the aircraft plunge into the pub.
He said: "It was a terrifying sight. I was on the roof of a car park, six floors up, getting into my car, about to drive home for the evening. I looked up and saw a helicopter which I think was a police helicopter falling out of the sky.
"It was like a stone dropping from the sky. It landed a few 100 yards from me. Strangely there was no explosion.
"It was just a strange, surreal moment. It looked like it was dropping from a great height, at a great speed.
"There was no fireball and I did not hear an explosion. The engine seemed to be spluttering."
He added: "It was an incredibly eerie spell. I was expecting to hear sirens straight away. There was no noise at all. I just couldn't quite believe what I had seen."