Authorities say he shot and killed his parent and three others, including a 17-year-old and 20-year-old brother and sister in two separate unrelated shootings back in louisiana. sad story. reporter: authorities believe the shooting was or a dispute between the suspect and his girlfriend. the sheriff thanked authorities in virginia after the suspect s arrest. they believe he first shot and killed his girlfriend and her 17-year-old brother and father. then they believe the suspect drove to his parents house where he shot and killed his mother and father. investigators say the us select had been living with his girlfriend s family but was recently asked to leave. this is probably i would say ....