Stamford Police say they got a call Tuesday morning about a man threatening people in a store with a knife.
The man, identified as Gordon, was reportedly acting aggressively and bizarrely.
They were eventually able to arrest him and found a folding knife clipped to his pocket, and a stun gun and brass knuckles in his backpack.
Gordon was arrested on charges including carrying a dangerous weapon, second-degree threatening and interfering with an officer.
The former basketball star, who played for the University of Connecticut before a decade-spanning career in the NBA, was taken to Stamford Hospital for a mental health evaluation.
He was released late Tuesday on $10,000 bond.
This is his third arrest in the last few months.
This latest incident happened to take place on his 40th birthday.