As RedState reported, there was a mass stabbing incident at a Walmart in Traverse City, Michigan, on Saturday.

Officials say at least 11 people were injured, six critically and five in serious condition as of this writing, after a man who is in custody but who has not yet been identified began his attack around 4:45 pm local time near the cash registers. All of the victims were transported to nearby Munson Medical Center for treatment. Some of them reportedly needed surgery.

Described as a 42-year-old resident who acted alone in "random" attacks using a "folding-style knife," the suspect was apprehended thanks in part to "citizen involvement," according to Grand Traverse County Sheriff Michael D. Shea.  

"This was a joint effort all the way through to, as I mentioned, the citizens, and thankfully, no one else was injured.  Eleven is eleven too many, but thank God it wasn't more," Shea stated during the press conference:

In an update on this story, video of that citizen involvement has been shared by local media outlets and shows an armed man and other bystanders courageously confronting the suspect in the parking lot of the Walmart, demanding he drop his weapon.  Also shown in the video are other shoppers who appear to be trying to provide aid and comfort to one of the victims.

Deputies from the sheriff's office arrived a short time later and took the suspect away in handcuffs. No motive has been given.

Warning: Some footage may be disturbing to some viewers:

These people undoubtedly saved lives.

This is a developing story. Stay tuned to RedState for updates.