Up to 125 firefighters attended the Scotland crash
30 November 2013 Last updated at 03:55 GMT
A police helicopter has crashed into a busy pub on the banks of the River Clyde in Glasgow.
The Scottish Fire and Rescue Service said it had a specialist urban search and rescue crew at the scene.
Assistant chief officer Lewis Ramsay said: "Our officers are working very hard in what is a very complex and hard environment for them.
"We are in the process at the moment of making the building stable. It is very unsafe".