Key Facts

• Colt Gray was 14 years old when he allegedly carried out the shooting at Apalachee High School in Georgia.
• He has been charged as an adult with 55 counts, including malice murder, aggravated battery, and aggravated assault.
• Gray initially pleaded not guilty but is now set to enter a different plea at a hearing later this month.
• The judge set a deadline for plea negotiations after Gray’s attorneys indicated they were working on a deal.
• Gray has been held in a juvenile detention center since his arrest.
• His father, Colin Gray, was convicted of second-degree murder for giving Colt the rifle used in the shooting.
• Prosecutors said the father ignored warnings about Colt’s violent behavior over the years.
• Colt Gray allegedly brought a semiautomatic assault-style rifle to school, hid it in his backpack, and planned the attack in advance with notes and diagrams.