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Oakland shooting

A member of the Oakland Police Crime Scene Investigation Unit walks past a makeshift memorial as she enters Oikos University where a gunman had gone on a shooting rampage, April 4, 2012 in Oakland, California. Six students and one employee were killed on Monday when a gunman opened fire at Christian-based Oikos University. The suspect One Goh, a former nursing student at the school, was arrested shortly after the shooting and is expected to make his first court appearance. (Photo by Jonathan Gibby/Getty Images)

Deadly Oakland university shooting

One Goh, the former student who authorities say gunned down and killed several people at an Oakland nursing college on Apr. 2 held a grudge against school officials, according to Oakland police, was deeply in debt with tens of thousands of dollars in federal tax liens against him and had two deaths in his immediate family last year.