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Key points
- Colin Gray, 55, received 15 years in prison after his conviction for second-degree murder and manslaughter linked to four deaths.
- His son Colt killed students Mason Schermerhorn and Christian Angulo and teachers Richard Aspinwall and Cristina Irimie at Apalachee High School in 2024.
- Judge Nicholas Primm said Gray had failed to prevent access to firearms despite warning signs concerning his son’s mental state.
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A Georgia judge sentenced Colin Gray to 15 years in prison on Thursday, months after his conviction over the deaths at Apalachee High School.
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