" I Just Killed My Ex."

The Berkshire Eagle reports that was part of an approximately six-minute 911 call Michael Boulais reportedly made moments after fatally shooting Kassedi Clark in his Hinsdale driveway.

Clark, 24, had come to pick up their children, Boulais later told police, and he shot her after they got into an argument.

Boulais, 32, is being held without bail after pleading not guilty Tuesday morning to one count of murder.

Documents released as part of Tuesday's arraignment detail the moments during and after the slaying of Clark, a nursing student at Berkshire Community College and mother of four children with Boulais.