Fond du lac police say a 43 year old Fond du Lac man apparently shot and killed himself following an argument with another person. Shortly after 8:30pm Friday police were called to a residence in the 300 block of Ellis St. in response to a complaint that a verbal argument had just occurred between a man and a woman ending with the male subject locking himself in a bedroom. The woman called police after she heard what sounded like a gunshot coming from the room. The SWAT team was called and police found the body of the man in the bedroom.