From Inside Edition.

The father of accused shooter Colt Gray appeared in court Monday. Authorities say Colin Grey’s son killed two students and two teachers in a rampage at a Georgia high school 18 months ago. They say the 14-year-old used a gun that was a Christmas gift from his dad. He has pled not guilty. Over a year before the shooting, police investigated threats they believed may have been made online by the teenager to carry out a school shooting. Colt has pleaded not guilty to four counts of felony murder.