Ogden, UT – Authorities are investigating a horrific murder-suicide that left five members of a Utah family dead, including a mother and her four children. Police believe the father of the family, 42-year-old John Doe, shot and killed his wife and four children before taking his own life. A 17-year-old boy survived the attack but is reported to have suffered severe brain injuries. The tragic incident took place over the weekend at a split-level home in a quiet suburban neighborhood of Salt Lake City. However, the victims were not discovered until Tuesday, when a relative who had been unable…