A 42-year-old man entered the Traverse City Walmart around 4:43 p.m. on Saturday and used a folding knife to stab five men and six women, according to the Grand Traverse County Sheriff's Office.

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

The authorities on Sunday said that a motive for the attack, which left 11 people injured, remained unknown. Citizens, including one who was armed, helped to apprehend the suspect, officials said.