Police: Motive for homicide still under investigation
Investigators are still searching for a motive in a three-week-old homicide case in which one MSU student and three other people were killed. Katherine Brown, 18, who was an agribusiness management sophomore, was killed Sept. 29 in a quadruple homicide. Jeremy Zimmer, 20, who was dating Brown; his mother Sharmaine Zimmer, 53; and his brother Tyler Zimmer, 17, also were killed.