TRAVERSE CITY, Mich. (AP) — Chaos unfolded at a Walmart in Michigan after a man burst into the store during a calm shopping afternoon and randomly stabbed 11 people, authorities say. Minutes after the attack Saturday, the suspect was in custody with the help of bystanders at the store.

The 42-year-old suspect, who was a Michigan resident but not known to law enforcement, entered the store shortly before 5 p.m. and used a folding knife to stab the victims, the Grand Traverse County Sheriff’s Office said in a statement on social media. Their ages weren’t immediately known.

A sheriff’s deputy arrived on the scene within 3 minutes and took the man into custody.

Steven Carter was loading his truck in the Walmart parking lot when he saw a man cut a woman’s throat with a knife.

About five minutes later, the man was surrounded by shoppers in the parking lot, including one who was holding a gun. The group of five or six people kept yelling to the man “drop the knife,” he said, and the man responded: “I don’t care, I don’t care.” He kept backing away from the crowd, before someone tackled and subdued him.