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.

KENT COUNTY, Mich., (WPBN/WGTU) — Matthew Kolakowski, U.S. Marine veteran and one of the bystanders who took action during the Traverse City Walmart stabbing on Saturday, will be speaking to the media in Grand Rapids Tuesday morning.

A man was arrested and is facing multiple charges for allegedly stabbing 11 people at a Walmart in Traverse City on Saturday. Thanks to multiple good Samaritans, police were able to apprehend the suspect.

Matthew Kolakowski was shopping for fishing gear and snacks with his daughter at the Traverse City Walmart over the weekend when he heard an employee yelling “he’s got a knife,” followed by sounds of screaming.

Walmart in Traverse City Saturday, July 26th. One of the bystanders, Matthew Kolakowski, is from Kent County. He helped to detain the suspect.

A Kent County man who helped stop the attacker who authorities say stabbed 11 people at Traverse City-area Walmart said looking in the man's eyes, it was clear something was wrong.

Matthew Kolakowski, a disabled veteran, says he and other shoppers managed to restrain the man accused of stabbing 11 people at a Walmart in Michigan.

The suspect charged in the mass stabbing of 11 people at Walmart pleaded not guilty at his arraignment in Grand Traverse County District Court Monday afternoon.