Box where James Horn held Sandra Sutton

Police say James Horn held his girlfriend Sandra Sutton inside this box for four months. She escaped on April 30, 2015, but was gunned down by Horn, who also killed her 17-year-old son, on May 21. Police later found, and killed Horn.

Police released these images of the box in which Sutton was held captive.

Inside the box where Sandra Sutton was held

Horn reportedly had Sutton help build the box that he kept her in

Inside the box where Sandra Sutton was held

Sutton had a bucket for urine and feces, a sleeping bag and a small air hole

Inside the box where Sandra Sutton was held

A small layer of padding was below the sleeping bad in the box

Inside the box where Sandra Sutton was held

Police say Horn began locking Sutton in the box in January 2015. She escaped in April, but Horn killed her in May.

Inside the box where Sandra Sutton was held

Police say Horn and Sutton met at their job and when their relationship turned sour, he attacked her and forced her to help build the box he would lock her in

Sandra Sutton and Zachary Wade Sutton

Less than a month after Sandra Sutton escaped the box he had held her in, James Horn killed her and her 17-year-old son, Zachary. He was killed by police two days later.