Oakland Police Department Press Information Officer Johnna Watson (L) briefs the media outside Oikos University, the site of shooting accident in Oakland, a city in the state of California, the United States, on April 3, 2012. The suspect, 43-year-old One Goh, in the shooting at Oikos University in Oakland, which left seven people dead, may have opened fire because he was furious with a school administrator and some students, investigators said on Tuesday. [Xinhua]