"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.

At least 11 people were stabbed in a horrifying scene inside a Michigan Walmart Saturday night — sending terrified shoppers and employees fleeing in all directions as bloodied victims collapsed across multiple departments, according to police and witnesses.

A stabbing suspect, who is believed to have acted alone, is in custody, but no motive is known, police say.