OKLAHOMA CITY - The Medical Examiner’s office has released the cause and manner of deaths for the suspect and victim in the shooting incident at Will Rogers World Airport Tuesday afternoon. 

According to the ME’s office, the suspect, 45-year-old Lloyd Buie, died of a gunshot wound to the head. His manner of death is suicide.

The victim, 52-year-old Michael Winchester, died of a perforating gunshot wound to the chest. His manner of death is homicide.

According to police, Buie was a former employee of Southwest Airlines and he resigned in April 2015. Winchester, a current employee of the airline, was leaving work and walking to his car when he was shot by Buie. Police believe Buie shot Winchester in retaliation against circumstances leading up to his resignation.

Winchester was pronounced dead at the hospital.