Police in Thornton, Colorado have reported two men and a woman are dead following a shooting at a Walmart in Thornton Town Centre on Wednesday (1 November).

Thornton Police received a report at 6.30pm Mountain Time of a shooting at 9900 Grant Street, a Walmart Super Centre, part of the Thornton Town Centre. Authorities warned the public to stay away from the area.

Police later confirmed that it was not an active shooter situation, but rather an "active crime scene".

Eye witnesses have reported hearing several shots fired. Multiple people described hiding in the Walmart before being evacuated by police.

Investigators have not released any details about the circumstances of the shooting or the condition of the injured woman AP reports.

Thornton Police said they would release information "as it becomes available".

Local reports revealed a large police presence, with police and ambulances surrounding the store.

Colorado Walmart Shooting
Police said it is no longer an active situation, but it is an active crime scene after two people were shot dead in a Walmart store Twitter