Six people have been killed after a bin lorry crashed into pedestrians in Glasgow's George Square
Eight people receiving hospital treatment following crash outside Queen Street station at 14:30 GMT
Eyewitnesses report lorry moving at speed up Queen Street before hearing a bang as it hit a hotel
One witness describes the lorry driver as "slumped over the wheel"
Eyewitnesses describe emergency services battling to save the lives of injured people on the street
The crash is being treated as a road traffic incident as police rule out anything "sinister"
Police hotline number - 01786 289 070
Anon: In the office in the Merchant Building on George Square, not being allowed to leave the building, not sure what's happening. Very upsetting and sad.
Anon: As a Glaswegian living in France I am shocked by what has happened today and my thoughts are with the bereaved families and the citizens of this fine city.
Adam Goss: Thoughts and prayers to those affected by the incident in Glasgow this afternoon.
Rory Bremner: Terrible that Glasgow's mighty spirit is being tested yet again by tragedy. At this time too. Heartfelt sympathy to victims & families.
Paul Lawrie: Awful news from Glasgow my thoughts with everyone affected by the tragedy.
Ross Murdoch: Such tragic news from Glasgow this evening! My thoughts are with everyone who has been affected by this personally and also the witnesses.
BBC Scotland's Catriona Renton at Glasgow Royal Infirmary: Nine people have been taken by the emergency services to hospitals across the city. The driver is one of those in hospital. There is no update on his condition.
Liberal Democrat leader Nick Clegg tweets: , externalHorrific news in Glasgow. My heart goes out to the families of all those caught up in this awful incident.
An extended Reporting Scotland is getting under way on BBC One Scotland.
You can watch the programme here.
Jamie McIvor
BBC Scotland correspondent
Standing in George Square at the moment it is much quieter than you'd normally imagine at six o'clock at night. All the roads nearby are closed off and far fewer pedestrians than usual.
Emergency vehicles are, of course, still at the scene and there remains a heavy police presence to both guard the scene and offer advice to people trying to find an alternative route.
Comedian Janey Godley, external, who was present in the aftermath of the incident in George Square this afternoon, has posted this picture showing metal poles bent flattened to the ground by the bin lorry.
She writes: "The force of this accident bent the traffic poles".
Image source, Janey GodleyAnon: On the train from Montrose to Glasgow Queen Street and our next stop is Queen Street - the mood is very sombre.
Alistair Carmichael, the Secretary of State for Scotland, said: "I share Scotland's deep shock at the horrible events in Glasgow this afternoon."
Image source, PA"On the eve of the festive period, these are unimaginable scenes in one of the busiest parts of our largest city.
"My thoughts are with the bereaved, the emergency services dealing with the aftermath and everyone affected by this terrible incident."
Sandra White, the MSP for Glasgow Kelvin, said the mood was "one of shock".
"It's surreal to say the least," she added. "I was in Queen Street myself half an hour before this happened. It brings it home to you that this could have happened to anyone.
Image source, PA"The first thing in people's minds was, not another tragedy so soon after the Clutha.
"But Glasgow will pick itself up - we are resilient people. But obviously our thoughts are with the people who are suffering at the moment, the families."
Commenting on the tragedy in Glasgow, Scottish Labour leader Jim Murphy said: "We don't yet know the full extent of this tragedy, but my thoughts and prayers are with everybody involved.
"People in Glasgow and across the whole of Scotland will be mourning this loss of life so close to Christmas. No words will be able to do justice to the pain the families involved will be feeling this evening.
"I want to pay tribute to our emergency services, who are performing heroics in the worst of circumstances. They will have the admiration of every Glaswegian and all Scots."
Laura Bicker in George Square
Scotland Correspondent, BBC News
We are expecting another update from the police very shortly. Officers are making their way in at the moment. There are a number of fire engines and paramedics still on the scene.
Glasgow City Council tweets:, external We considered switching off Christmas lights in George Square as a mark of respect. Police asked us to leave them on to help investigation.
Police Scotland have confirmed that six people have been killed in the Glasgow bin lorry crash.
Jamie McIvor
BBC Scotland correspondent
As you can imagine many people working in the blocks around here are absolutely shocked by what they saw earlier on this afternoon.
Some have been out handing out tea to passers-by and the emergency services and talking about what some of their colleagues saw.
BBC Radio Scotland
Coverage of events in George Square continues live on BBC Radio Scotland #Glasgow #georgesquare
Witness Janey Godley told the BBC News Channel that people were "getting CPR (cardiopulmonary resuscitation) on the ground" when she arrived in George Square.
"I think I was there just as the ambulances arrived because there was stuff strewn, debris strewn, all over the street, Christmas shopping all over the street," she said.
Ms Godley said she saw three people being treated by emergency crews.
"People were being worked on, people were fighting for their lives on the pavement as shoppers were standing," she added.
"People just like me had arrived on the most shocking scene they ever wanted to see this Christmas. George Square is a square with a fairground and an ice rink and Santa and the tree and everything."
Labour MP for Glasgow Central, Anas Sarwar, is calling for anybody in the George Square area to contact family:
Image source, Getty ImagesAnyone who is concerned that their loves ones might have been caught up in the incident can call the Police Scotland helpline on 01786 289070.
Laura Bicker
Scotland Correspondent, BBC News
A number of people have been coming here delivering flowers, because they've just heard the news and felt that they needed to do something.