The suspect at times went off on tangents about cigarettes filled with fiberglass and seeing videos about psychotropic drugs.

An analysis of court records and archives found Bradford James Gille had a history of legal and mental health struggles before the July 26 attack.

Perry was captured on video confronting a Cheboygan man after he allegedly stabbed 11 people at a Walmart store in Garfield Township.

Matthew Kolakowski was shopping with his daughter at a Michigan Walmart when he heard screams and saw a man with a knife.

In an ABC News exclusive, Derrick Perry recounts his confrontation and pulling his gun on the man accused of stabbing 11 ...

In the midst of chaos Saturday afternoon, community members sprang into action to confront the suspect in the Walma ...