[WATCH] Two killed in shooting at Colorado Walmart store

No one has been taken into custody after three people died following a shooting at a Walmart store in suburban Denver

Two men died after the gunman opened fire in the store in Thornton, Colorado on Wednesday night. A woman was also injured, and later died at hospital.

Two men died after a gunman opened fire inside the store in Thornton, Colorado, on Wednesday night.

A woman was also injured, but died later in hospital, according to Thornton Police Department.

Police have warned the public to stay away from the store where the shooting occurred just after 6pm last night. Police immediately evacuated the mall when they arrived.

No one has yet been taken into custody.

An hour after the alarm was raised officers said that the threat of gunfire has ended.

Aaron Stephens, 44, a customer at the store, said he was paying for groceries when he heard gunshots and the sound of ricocheting bullets.

"The employees started screaming and the customers started screaming. I ran out, too, because I didn't want to get shot," he said.