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

The man was captured in three minutes thanks to "citizen involvement," Grand Traverse County Sheriff Michael D. Shea said.

A dramatic video shows the moment heroic bystanders confronted a mass-stabbing suspect at a Walmart in Traverse City, Michigan. A 42-year-old male, now identified as Bradford James Gille, reportedly entered the store and used a folding knife to stab several people,