Matthew Kolakowski was shopping with his daughter at a Michigan Walmart when he heard screams and saw a man with 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.

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

A Michigan prosecutor filed a terrorism charge Monday against a man accused of stabbing 11 people at a Walmart store. The charge has been rarely used in the state's courts since it was adopted more than 20 years ago during the national outrage over 9/11.

At least 11 people were injured in a "multiple stabbing incident" at a Walmart in Traverse City, Michigan, officials said.

Bradford James Gille faces a terrorism charge after 11 people were injured in the attack Saturday in Traverse City.

Authorities say they plan to file terrorism and assault with intent to murder charges against the suspect in a weekend knife attack at a Walmart store in Michigan.

Stabbing suspect Bradford James Gille was subdued within minutes with the help of bystanders, authorities said.

"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.