A Man Accused Of Killing His Ex-Girlfriend In Kingsport Is Now Facing Two Counts Of First Degree Murder. Melissa Mingle Died Monday After She Was Found Unconscious In Her Yard Sunday. Authorities Said Mingle Was Pregnant At The Time. 30 Year Old Nathaniel White-Young Is Also Charged With Aggravated Arson And Violation Of Probation. According To Hospital Staff, The Victim Was Struck In The Head With An Unknown Object. White-Young Is Being Held Without Bond And His Next Court Date Is Set For October 15th.