ntrollable urges and voices telling him to do things.

Colt previously pleaded not guilty and was slated for a trial in October.

Colin Gray, Colt's father, was convicted of multiple charges - including second-degree murder, involuntary manslaughter, reckless conduct and second-degree child cruelty - in March after prosecutors said he gave Colin the gun used in the shooting despite knowledge of his son's poor mental health. He is set to face sentencing on Thursday.

This is a developing story. Check back with Atlanta News First as we learn more.

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