Multiple people were involved in stopping and detaining the suspect in Saturday's attack at a Walmart store in Traverse City. One was armed with a pistol.

One of the men who authorities say helped take down a suspect who stabbed eleven people at a Walmart told NBC News about how he sprung into action. Marine veteran Matthew Kolakowski says he took off running after the suspect and rammed him with a grocery cart to prevent him from hurting more people.

A Walmart employee was helping a customer check out when she heard a warning that someone in the store had a knife.