Employees and customers scrambled when shots were fired inside of a Walmart in Thornton on Wednesday evening.

RELATED: No suspects in custody after 3 killed in Thornton Walmart shooting: Police

Multiple people were inside the store, and others waited outside to hear from their friends and family.

9NEWS spoke to several witnesses. This is what they told us:

Aaron Stephens describes standing at a self-checkout station when he heard shots fired in the back of the store.

This son called his mother, with 1 percent phone battery, and told him he was in the store with a shooter.

This father hadn't yet heard from his daughter, who went to Walmart for nursing school supplies.

This man ran out a back door to get away from the store.

A woman ran into a back room with this Walmart employee when he was taking a break.

Woman picked up by a stranger along the highway to get away from the Walmart.

"I thought it was a balloon pop."