(Attleboro, MA) -- A Brown University graduate student was one of two people killed in a crash in Attleboro, Massachusetts on Thursday. The Bristol County District Attorney's Office says Sean St. Louis of Providence and Maryori Conde of Los Angeles were killed in the crash on Interstate 95 south. Three others were injured in the two-vehicle wreck that happened in the overnight hours. Massachusetts State Police say St. Louis was the only person in his vehicle when it lost control and rear-ended a second vehicle.