A man charged in the case of a slain Tennessee nursing student says he helped his friend unload the injured woman’s body from a truck and served as a lookout when he shot her near a river.

Jason Autry testified Thursday in the trial of Zachary Adams in Savannah, Tennessee. Adams has pleaded not guilty to kidnapping, raping and killing Holly Bobo, who was 20 when she disappeared from her home in Parsons on April 13, 2011.

Her remains were found 3 ½ years later in a wooded area.

Autry is also charged with Bobo’s rape, kidnapping and slaying. He is on a list of witnesses who could get immunity in the case and he told a prosecutor during questioning that he was testifying because he wanted leniency.