Student Jose Ortiz, 14, accepts an embrace from chaplain Ronald Clark at a makeshift memorial, one day after a deadly school shooting at Apalachee High School in Winder, Ga., in September 2024. Four people were killed by Colt Gray, who was 14 at the time. On Thursday, his father was sentenced to 15 years in prison for criminal negligence in the case. File Photo by Erik S. Lesser/EPA

July 30 (UPI) -- Colin Gray, the father of Georgia school shooter Colt Gray, was sentenced to 15 years in prison Thursday, just two days after his son was sentenced to life in prison.

On Tuesday, Colt Gray, now 16, was sentenced to life without parole for the Sept. 4, 2024, shooting at Apalachee High School in Winder, Ga. Two teachers and two students were killed, and another teacher and eight students were injured.

Colin Gray was found guilty in March of 29 charges, including two counts of second-degree murder and two counts of involuntary manslaughter.

"My heart aches for everyone who was there that day, for all of you that have been impacted by it, but the law requires that I set aside emotion, I don't get to sentence with passion," Judge Nicholas Primm said as he was sentencing Colin Gray. "I have the nearly impossible task of sentencing you without passion despite the immeasurable heartache that you've caused."