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

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

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

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

A weekend stabbing spree at a Michigan Walmart initially left 11 injured, including six critically. As of the latest update, ...

Following the stabbing of 11 victims at a Walmart store near Traverse City, Michigan, on Saturday, Grand Traverse County ...

A group of bystanders, including a man armed with a firearm, rallied together to help stop a suspect who stabbed 11 people at ...

Authorities say 42-year-old Bradford James Gille walked into the store Saturday afternoon and began stabbing shoppers near ...

We're learning more about Bradford Gille, the suspect in the mass stabbing incident on Saturday at the Grand Trav ...

The suspect at times went off on tangents about cigarettes filled with fiberglass and seeing videos about psychotropic drugs.

Court records show the man charge with stabbing 11 people at the Traverse City Walmart was treated for a year at a mental ...

One of the men who authorities say helped take down a suspect who stabbed eleven people at a Walmart told NBC News about how ...