A man who gave his son the gun he used to kill two students and two teachers at Apalachee High School in Georgia was sentenced Thursday to 15 years in prison.

Colin Gray’s sentencing comes days after his son, Colt Gray, was sentenced to life in prison without the possibility of parole in the Sept. 4, 2024, shooting at the school 45 miles (70 kilometers) northeast of Atlanta. Colt Gray had pleaded guilty to murder and other charges.

A defense attorney for Colin Gray asked the judge for a sentence that would amount to 10 years in prison followed by 10 years on probation. The district attorney said Gray deserves a sentence of 80 years in prison.