Miles Bench has already twice been determined competent to stand trial.
Bench is charged with the murder of 16-year-old Braylee Henry on June 6, 2012, who police say had gone to the store in Velma to buy a soft drink and snack.
Police say Bench attacked Braylee while she was there in the convenience store where he worked in Velma.
Officers found blood in a store room.
A psychologist who had determined Bench was competent last June, later changed her mind and defense attorneys asked that a jury determine his competency.
That jury found he was competent to stand trial.
He and his attorney are due in court to discuss the most recent application tomorrow afternoon.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.