On Saturday afternoon, 11 people were significantly injured after a mass stabbing at a Walmart store in Traverse City.

The incident was reported around 4:43 p.m. in Garfield Township near the Grand Traverse Crossings Mall. According to the Grand Traverse County Sheriff’s Office, a 42-year-old man entered the store with a folding knife and stabbed 11 people of unknown ages near the checkout area.

While not confirmed, a video has surfaced showing two citizens stopping the suspect at gun point before leaving the parking lot. Local law enforcement took the subject into custody a few minutes later after arriving on scene.

As of Saturday night, six victims were reported in critical condition, five were in serious condition, and three required surgery. All victims are being treated at Munson Medical Center.

The Grand Traverse County Sheriff’s Office, Michigan State Police and the FBI are investigating. No motive has been identified at this time.

Authorities will release more details as they become available.