March 5, 2012 1:56 pm “I Know Someone Knows Something” Lareanz Simmons’ grandmother asks for help finding the gunman who shot and killed a 14-year-old Riverside Poly High School student. US & World Videos 1:41 Security guard shot outside of hip-hop executive's Encino home 12:21 The Rundown: Monday April 29, 2024 0:46 Protesters remain camped out on UCLA campus 0:44 Security guard shot at $12 million Encino home 1:01 One person killed in crash in Porter Ranch