A passenger on a Southwest Airlines flight from Dallas to Los Angeles International Airport experienced a medical emergency mid-flight. The man became unresponsive and CPR was administered during the flight. Medics responded when the plane arrived in Los Angeles, but efforts to revive the man were unsuccessful.

The Los Angeles County Medical Examiner's Office identified the passenger as 22-year-old Rain McMillan Walmsey. The cause of death is under investigation, and the nature of the medical emergency is unclear. Southwest Airlines confirmed a medical incident occurred on the flight.

For more information, readers can consult the original report from NBC4.