In an ABC News exclusive, Derrick Perry recounts his confrontation and pulling his gun on the man accused of stabbing 11 ...

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

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 ...

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

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

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

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

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