In the weeks after killing two students and two teachers at Apalachee High School in Georgia, the jailed teenage gunman had frequent phone conversations about his online notoriety with his mother, who at one point promised to make him a shrine to him.Prosecutors played clips of the recorded conversations between Colt Gray and his mother during the teenager’s sentencing hearing Tuesday. Gray, 16, pleaded guilty Friday to 55 counts, including murder, in the Sept. 4, 2024, shooting at the school about 45 miles (73 kilometers) northeast of Atlanta. The conversations so alarmed officials that Gray’s mother was later barred from talking to him.Murder carries a minimum sentence of life in prison in Georgia. Barrow County Superior Court Judge Nicholas Primm has to decide whether Gray should have the possibility of parole after hearing testimony and evidence presented by the defense and the prosecution. Tuesday was the third day of a sentencing hearing that began Friday.Teachers Richard “Ricky” Aspinwall, 39, and Cristina Irimie, 53, and students Mason Schermerhorn and Christian Angulo, both 14, died in the shooting. Another teacher and eight more students were wounded, seven of them hit by gunfire. A jury in March convicted Gray’s father, Colin Gray, on charges including second-degree murder and involuntary manslaughter. He is scheduled to be sentenced Thursday. Prosecutors said he gave his son the assault-style rifle used to open fire at the school.