White man shoots up Walmart; police dub him a “nonchalant” killer

Thornton, CO- police have arrested Scott Ostream, 47 in a suburb outside Denver. Ostream has been described by police as “nonchalant” and “calm” depsite allegedly shooting 3 people in a Walmart.

The “nonchalant” gunman killed three inside a Denver-area Walmart Wednesday evening, sparking mass panic and an all-night manhunt, was nabbed during a raid on an apartment building just eight miles from the scene, police said. 

Scott Ostrem was taken into custody after police stopped his red Mitsubishi Mirage at an intersection less than 10 miles away from the Walmart he had attacked, FOX31 Denver reported.

Law enforcement quickly took off and followed the vehicle, stopping it at West 72nd Avenue and Federal Boulevard where Ostrem was apprehended without incident.

At a news conference, police said Ostrem did not have an extensive criminal history before the shooting and there is no motive for the attack.

The Thornton Police Department said Ostrem walked into the south doors at the Walmart located at 9900 Grant St. around 6:10 p.m. Wednesday and “nonchalantly” began firing with a handgun.

Victor Vasquez, 26 of Denver, and Carlos Martinez, 66 of Thornton, were pronounced dead at the scene. Pamela Marques, 52 of Denver, was taken to a hospital but later was pronounced dead.

Ostrem will make his first court appearance at 8:30 a.m. Friday at the Adams County Courthouse.