"I just went as hard as I could and just got him on his ankles with the grocery cart from behind," said the disabled veteran who, along with other shoppers, managed to disarm and restrain the man with the knife until police arrived.

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.

Eleven people were stabbed at a Walmart in Traverse City on Saturday — with six in critical condition — in what a Michigan sheriff said appeared to be a random act.

Authorities say he attacked 11 people before bystanders confronted him in the parking lot until police arrived.

Video footage from the incident shows bystanders confront the suspect after a stabbing rampage that initially left 11 people injured.

Video shows an armed bystander confronting a knife attacker who allegedly injured 11 people at a Walmart in Traverse City, Michigan, on Saturday.

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

A weekend stabbing spree at a Michigan Walmart initially left 11 injured, including six critically. As of the latest update, 10 people remain hospitalized and are being treated for their injuries, according to officials. The attack began at the Traverse City store around 4:43 p.m. local time on July 26.

"I'm still sitting and grappling with the weight of realizing that it was kind of a life-or-death moment," said Julia Martell, who witnessed the stabbing, which wounded 11 people.