THREE people are dead after a gunman opened fire at a Walmart store in the US. The suspect remains at large.
According to authorities, two men and a woman were killed in the incident that happened in Thornton around 6.30pm local time, 11.30am AEDT.
Reports of multiple gunshots were made before police arrived on the scene at 9900 Grant St, where the Walmart Super Centre is part of the Thornton Town Centre.
Dozens of police cars and emergency services vehicles raced to the scene, including a SWAT team.
Reuters reports that police did not release any information about any of the victims and it was not clear if an assailant had been taken into custody.
“We’ve got multiple parties down, we’re still trying to ascertain what their conditions are,” Officer Victor Avila of the Thornton Police Department told Reuters.
The store had been “self-evacuated” by customers and employees who fled following the gunfire, Avila said.
One witness named Stephen told local TV at first he thought the sound of gunfire was a firecracker or a car backfiring.
“It was when I heard the staff screaming that I knew I had to get the heck out of there,” he said.
According to Fox News, The Walmart Super Center is part of a shopping center that includes restaurants and a movie theater. It is located off Interstate 25 in Thornton, which is about 16km north of downtown Denver.
Another witness Jay told KDVR the shooter was dressed in a black suit and fired off a gun that was semi-automatic for around 30 seconds and that the incident happened at the back of the store where Halloween costumes were sold.
Another witness told KDVR that she was heading toward the store’s checkout when she heard “two slow pops that sounded like they were coming from the front checkout area, and then I started to run as about four more shots rang out a little faster.