Police: Colorado man ‘nonchalantly’ walks into Walmart, then opens fire on shoppers 

Police ID suspect accused of randomly killing 3 people at Walmart

THORNTON, Colo. — The man wanted in connection to a shooting at a Walmart store in Thornton that left three people dead was identified on Thursday morning.

The Thornton Police Department said a nationwide extradition homicide warrant has been issued for 47-year-old Scott Ostrem.

He is described as a white man who was wearing a black jacket with maroon shirt and blue jeans.

He fled the scene in a 2017 red, four-door Mitsubishi Mirage with Colorado license plates 882-TQB.

Ostrem is considered armed and dangerous.

Police said the suspect walked into the south doors at the Walmart located at 9900 Grant St. around 6:10 p.m. and "nonchalantly" began firing.

Two men were pronounced dead at the scene. A woman was taken to a hospital and was later pronounced dead. Their names and ages have not been released.

The shooting appears to be random and there are no indications it was an act of terror, police spokesman Victor Avila said.

"This is a very heinous act," Avila said. "We don't know exactly what the motive of the person was, but it was certainly a terrible act."

Police were being assisted by special agents with the Bureau of Alcohol, Tobacco, Firearms and Explosives.

People inside the store at the time of the shooting described being scared and in shock when the shots rang out.

RELATED: Witnesses describe the scene at the Thornton Walmart

Employees described hiding in a back room, under a table for about five to 10 minutes before running out a back door.

One man inside said there were problems opening the doors as shoppers tried to escape.

Photos from the scene show crowds outside the store as police rush to respond.