Police arrested a 42-year-old man, Bradford James Gille, 42, of Afton, Mich., in the Saturday stabbings of 11 people in a Traverse City, Mich., Walmart.

By the time an employee in the checkout area yelled about a man with a knife, it was too late. Nearly a dozen people had been stabbed at the busy Walmart in Traverse City, a tourist town on the shore of Lake Michigan,