Elliot Oliver Robertson Rodger (July 24, 1991 – May 23, 2014) was an English-American mass murderer who was responsible for the 2014 Isla Vista killings. On May 23, 2014, Rodger killed six people and injured fourteen others using knives, semi-automatic pistols and his car near the University of California, Santa Barbara (UCSB) in Isla Vista, California. Rodger first killed his two roommates and their friend in the apartment they shared, ambushing and stabbing them one at a time as they arrived.
https://en.wikipedia.org/wiki/Elliot_Rodger