It's believed three people have been killed and scores more injured after a police helicopter crashed into the roof of a pub in the Scottish city of Glasgow.
Police in Scotland have confirmed that three people were on board the chopper at the time, while at least 120 people had gathered in the pub to watch a music gig.
MP Jim Murphy told the BBC he was driving through the area "just a few seconds after what seems like a helicopter has crashed into a pub".
Murphy said he had seen "multiple injuries".
"It's a well-established Glasgow pub. It's a horrible, horrible scene, but well done to the folk who were here. Everyone formed a chain of people from inside the pub to outside, and the fire brigade and everyone was here very quickly."
Eyewitness Fraser Gibson, 34, was inside the Clutha pub with his brother to see his former band, Esperanza.
"Midway through their set it sounded like a giant explosion," he told BBC Scotland.
"Part of the room was covered in dust. We didn't know what had happened. We froze for a second; there was panic and then people trying to get out the door."
Scotland's Deputy First Minister Nicola Sturgeon said it was "awful news".
"Absolutely awful news about a helicopter crashing into the Clutha. All my thoughts are with everyone involved & the emergency services," she tweeted.
UK Prime Minister David Cameron has tweeted that his thoughts are with those caught up in the crash.
Fire authorities said they were still at the scene and were assessing the situation.
The death toll is likely to rise.