3 killed in ‘random’ Thornton Walmart shooting; police name, arrest suspect — VIDEO REPORT

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

Walmart Shooting Colorado

Several people were killed in a shooting inside a Walmart, forcing customers to either hide in the store or frantically run for the doors, Wednesday, Nov. 1, 2017, in Thornton, Colo. Thornton police advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (AP Photo/P. Solomon Banda)

Walmart Shooting Colorado

Several people were killed in a shooting inside a Walmart, forcing customers to either hide in the store or frantically run for the doors, Wednesday, Nov. 1, 2017, in Thornton, Colo. Thornton police advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (AP Photo/P. Solomon Banda)

Walmart Shooting Colorado

Several people were killed in a shooting inside a Walmart, forcing customers to either hide in the store or frantically run for the doors, Wednesday, Nov. 1, 2017, in Thornton, Colo. Thornton police advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (AP Photo/P. Solomon Banda)

Walmart Shooting Colorado

Police investigate a shooting at a Walmart store in Thornton, Colo., Wednesday, Nov. 1, 2017. Thornton police tweeted Wednesday night that they were responding to a shooting with "multiple parties down." They advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (Andy Cross/The Denver Post via AP)

Walmart Shooting Colorado

People stand across the street from a shooting investigation at a Walmart store, Wednesday, Nov. 1, 2017, in Thornton, Colo. Several people were killed in a shooting inside a suburban Denver Walmart on Wednesday night, forcing customers to either hide in the store or frantically run for the doors. Thornton police advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (Andy Cross/The Denver Post via AP)

APTOPIX Walmart Shooting Colorado

Walmart employees gather together outside away from the scene of the Walmart store where a shooting occurred inside the store, Wednesday, Nov. 1, 2017, in Thornton, Colo. Thornton police tweeted Wednesday night that they were responding to a shooting with "multiple parties down." They advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (Helen H. Richardson/The Denver Post via AP)

Walmart Shooting Colorado

Police guard the front entrance to Walmart where a shooting occurred inside the store, Wednesday, Nov. 1, 2017, in Thornton, Colo. Thornton police tweeted Wednesday night that they were responding to a shooting with "multiple parties down." They advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (Helen H. Richardson/The Denver Post via AP)

Walmart Shooting Colorado

A father and his scared daughter, who were customers inside Walmart, are escorted out of the parking lot and away from the scene of the Walmart store where a shooting occurred inside the store, Wednesday, Nov. 1, 2017, in Thornton, Colo. Thornton police tweeted Wednesday night that they were responding to a shooting with "multiple parties down." They advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (Helen H. Richardson/The Denver Post via AP)

Walmart Shooting Colorado

Walmart employees and customers that were inside the store wait to hear what to do from police as they stand behind police tape outside of a Walmart store where several people were killed in a shooting, Wednesday, Nov. 1, 2017, in Thornton, Colo. Investigators, who have not released any details about the circumstances of the shooting, were reviewing security footage and interviewing witnesses to get a description of the shooter. (Helen H. Richardson/The Denver Post via AP)

Walmart Shooting Colorado

People watch police activity at the scene of a shooting inside Walmart, Wednesday, Nov. 1, 2017, in Thornton, Colo. Thornton police tweeted Wednesday night that they were responding to a shooting with "multiple parties down." They advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (Helen H. Richardson/The Denver Post via AP)

Walmart Shooting Colorado

Employees exit the parking lot after a gunman opened fire inside of Walmart in Thornton, Colo., Tuesday, Nov. 1, 2017. Thornton police tweeted Wednesday night that they were responding to a shooting with "multiple parties down." They advised people to stay away from the area as dozens of police cruisers and emergency vehicles raced to the scene. (AAron Ontiveroz/The Denver Post via AP)

Walmart Shooting Colorado

Darlene Jackson sits on an overturned shopping cart as she and fellow shoppers and employees gather outside after a gunman opened fire in Walmart in Thornton, Colo., Tuesday, Nov. 1, 2017. Police in Thornton announced the shooting in a tweet Wednesday evening and advised people to stay away from the area. Dozens of police cars and emergency vehicles converged at the store. (AAron Ontiveroz/The Denver Post via AP)

Walmart Shooting Colorado

Walmart customers and employees are held back while emergency crews and police work on the grounds of Walmart during a shooting in Thornton, Colo., Wednesday, Nov. 1, 2017. Police in suburban Denver say they are responding to a shooting at a Walmart with "multiple parties down." Dozens of police cars and emergency vehicles converged at the store. (John Leyba/The Denver Post via AP)

APTOPIX Walmart Shooting Colorado

Emergency crews and police work at the scene in response to a shooting at Walmart in Thornton, Colo., Wednesday, Nov. 1, 2017. Police in suburban Denver say they are responding to a shooting at a Walmart with "multiple parties down." Dozens of police cars and emergency vehicles converged at the store. (John Leyba/The Denver Post via AP)

Walmart Shooting Colorado

This Wednesday, Nov. 1, 2017, image released by the Thornton Police Department shows shooting suspect Scott Ostrem at a Walmart in Thornton, Colo. Colorado authorities identified Ostrema as the man who police say nonchalantly walked into the Walmart and immediately opened fire with a handgun, killing several. (Thornton Police Department via AP)

THORNTON | A manhunt ended Thursday morning as authorities arrested a suspect witnesses said walked into a Thornton Walmart and immediately opened fire with a handgun, killing two men and a woman Wednesday night.

Aurora police said Thursday Thornton officers found and arrested Scott Ostrem, 47. Ostrem fled in a car before officers arrived. Authorities used security video to help identify the suspect.

The shooting appears random and there are no indications that it was an act of terror, Thornton police spokesman Victor Avila said Wednesday night.

The motive was unknown, Avila said.

Two men died inside the Walmart, which is about 10 miles (16 kilometers) north of Denver in a busy shopping center. The woman died later at a hospital.

Authorities did not immediately release any other information about the victims.

Aaron Stephens, 44, was in the self-checkout line when he heard a single shot followed by two more bursts of gunfire before people started running for the exits.

“The employees started screaming. Customers were screaming. They were running like crazy, and I ran out too because I didn’t want to get killed,” he said.

Guadalupe Perez was inside the store with her young son when she heard what she thought was a balloon popping. A Walmart employee told her someone was shooting, and then Perez saw people running away yelling, “Let’s go. Let’s go. Leave the groceries.”

“You see all these things in the news and you go through it, it’s scary,” she said. “But thank God we’re OK and nothing happened to us.”

Investigators, including special agents with the Bureau of Alcohol, Tobacco, Firearms and Explosives, were reviewing security video and interviewing witnesses.

Ragan Dickens, a Walmart spokesman, said the company is working with investigators.