(Richmond, IN)--Richmond police investigators have a person of interest in connection with the shooting death of RHS senior Tremell Carpenter early Tuesday morning. That person was not in custody Thursday morning and RPD is not releasing the shooter’s name. Sources close to the situation say that shooter is a teenager who was involved in a rather high-profile investigation late last year. The suspected shooter’s Facebook account has been reactivated. A post made early Thursday morning appears to be a suicide message and begins with the words "I’m sorry for the pain that was brought upon everyone…" RPD’s investigation continues.