An armed bystander was seen on video heroically stopping a knife-wielding man who authorities say stabbed 11 people at a Walmart in Michigan on Saturday.

The man, identified by family as Derrick Perry, is seen in the video pointing a firearm at the suspect in the store’s parking lot in Traverse City as he and other bystanders shout “drop the knife!” Perry is a Marine veteran, the New York Post reported, citing his family.

“What they did was amazing,” Grand Traverse County Sheriff Michael Shea told reporters during a media briefing on Sunday.

Perry and the other bystanders ended the suspect’s rampage without firing a shot and held him until authorities arrived to take the man into custody without injury. 

Perry’s daughter replied to the post, describing her father’s heroic life-saving actions as a “proud daughter moment.” His daughter-in-law wrote in a separate post that Perry is a “true hero.”

This image provided by Steven Carter shows law enforcement officers responding to a stabbing attack at a Walmart in Traverse City, Mich, Saturday July 26, 2025. (Steven Carter via AP)

The National Association for Gun Rights called Perry a “good guy with a gun” whose courage “deserves recognition” in a post on X.

Meanwhile, authorities have said that the motive for the stabbing remains unknown.