 Most executions were punishments for attempted escape, but “crimes” such as eating chestnuts off the ground without permission were also punished by death.One prisoner witnessed an estimated 50-60 executions per year, including group executions of up to 20 people.In April 2015, HRNK and AllSource Analysis, Inc. discovered what appeared to be a satellite image of an execution by ZPU-4 anti-aircraft machine guns at the Kanggon Military Training Center outside of Pyongyang.