Nearly a dozen people were stabbed at a Walmart in Traverse City, Michigan, Saturday afternoon, in what police are calling a “random” act by a lone attacker. Six of the injured were still in critical condition hours later.

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

Eleven people were wounded in a stabbing incident at a Walmart in Traverse City, Michigan, officials said Saturday evening. A man is in custody.Grand Traverse County Sheriff Michael D. Shea said in a news conference that the stabbings happened near the checkout area of the store and appeared to be random in nature.