Gunman kills 10 in Colorado market shooting
A gunman has killed 10 people, including a officer, following an hours-long stand-off at a grocery industry in Colorado, US police say.
The attack in Boulder ended with an injured, shirtless suspect being led from the King Soopers industry.
The shooting was live-streamed by witnesses and broadcast on YouTube.
The incident started out around 14:30 local time (20:30 GMT) when the suspect entered the grocery store and began firing.
The Boulder police tweeted some 20 minutes later that there was an "Active Shooter at the King Soopers on Table Mesa" street.
Two hours soon after, the police again warned people in order to avoid the spot. "USUALLY DO NOT broadcast on cultural media any tactical details you might discover," the tweet added.
However, a few of the stand-off was captured in camera by a passer-by showing victims near the supermarket.
"I don't know what's happening... I heard gun pictures, someone's down," the cameraman shouts. "There's a dynamic shooter, get away".
Gun shots can be heard as he works away from the shop.
The video continues, with police arriving on the scene and surrounding the market.
On Twitter, Colorado governor Jared Polis said: "My prayers are with this fellow Coloradans in this time around of sadness and grief as we find out more about the level of the tragedy."
President Joe Biden features been briefed about the shooting, the White House said.
