Police officer among 'multiple people' killed in supermarket shooting - US police

US police say "multiple people" have been killed in a shooting at a supermarket in Boulder, Colorado, including a police officer. A witness told the Associated Press he heard gunshots and saw three pe

Police officer among 'multiple people' killed in supermarket shooting - US police

US police say "multiple people" have been killed in a shooting at a supermarket in Boulder, Colorado, including a police officer.

A witness told the Associated Press he heard gunshots and saw three people lying face down on the ground, adding that he "couldn't tell if they were breathing".

Video posted on YouTube showed one person on the floor inside the King Soopers store and two more outside on the ground, but the extent of their injuries was not clear.

Boulder Police said a suspect had been taken into custody but have not given further details about the shooting or how many people were killed.

Boulder County District Attorney Michael Dougherty said authorities know how many people died and suggested they are not releasing more information at this stage because families of the victims have yet to be notified.