Eight people died after a police helicopter crashed into the roof of a crowded pub in the centre of Glasgow.
The three occupants of the helicopter – two police officers and a civilian pilot – were among the dead, Police Scotland said.
Chief Constable Sir Stephen House said: “Our thoughts and condolences are very much with the families of those who have died and those who have been injured in this tragic incident.
“We are working alongside our emergency services colleagues in the ongoing rescue operation. I would like to take this opportunity to praise the people of Glasgow who helped in the very early stages following the incident and commend their courage.
“We are dealing with a very sensitive and complex operation and we expect that emergency services will be at the scene for some time. We would thank the public for their co-operation as our officers and other emergency service colleagues continue this difficult task.”
Fourteen people remain in Glasgow hospitals, he said.
Speaking at the scene, Deputy First Minister Nicola Sturgeon said: ``Our hearts go out to everyone who has been bereaved. It is impossible to imagine the grief and loss they are experiencing, but they should know that the thoughts and prayers of everyone across this city, and across Scotland, are with them at this unimaginably difficult time.