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

"Regrettably, less than 24 hours after receiving this order, a tragic series of events occurred in Traverse City," the sheriff's office 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.

Autoridades informan que varias personas fueron apuñaladas en un Walmart en Michigan; detienen a presunto agresor.