Botetourt County officers are investigating a Troutville domestic argument. The man involved in the incident told officers the argument started Saturday evening and the two continued to argue Sunday morning. The man said the women went to her car and came back with a handgun. He then started running away but heard a single gunshot. The woman was found in the home on Edgewood Drive with a single gunshot wound to the head. The names of the individuals have not been released. The investigation is ongoing.