Authorities say a man stabbed five people on a university campus in central California before police shot and killed him. It happened Wednesday morning at the University of California, Merced, campus. The Merced Sun-Star reports that the assailant is described as a male student in his 20s. The attack took place about 8am in the Classroom and Office Building and ended when UC officers shot the man. Two of the victims were taken by helicopter to hospitals for treatment and the other three were treated at the scene. The school remains on lockdown and classes have been canceled for the day. The rural school is about 120 miles south of Sacramento. (More University of California stories.)