The Clutha Bar, in downtown Glasgow, was packed with about 150 people Friday night when the helicopter crashed into the building. Thirty-two people were taken to hospitals with injuries, CNN reported.
Eight bodies have been recovered and authorities said the death toll could rise.
"Safety work will continue during the evening to stabilize the building and helicopter to ensure a safe working environment for emergency personnel," a police statement said.
Police said one of the victims was Gary Arthur, 48, of the Paisley area, whose daughter, Chloe, plays for the Celtic Football Club based in Glasgow, the BBC reported.
Police said "ongoing safety constraints" were slowing down search efforts at the site of the crash.
.Aviation expert Chris Yates told the BBC that the helicopter will likely be moved to a secure location where investigators will determine the cause of the crash.
Public officials have commended rescuers, police and firefighters for their work at the scene.
"I think, along with their colleagues in the ambulance and heath service, everyone knows and understands just how magnificent that response has been," Scottish First Minister Alex Salmond said, the BBC reported
Prime Minister David Cameron said that a number of "ordinary Glaswegians" acted with bravery and rushed to help at the scene.