(Los Angeles, CA) -- There's extra security today on Southern California's bus and rail lines. The LAPD reports that the action comes following a rush-hour explosion on a London subway that sent more than two dozen people to hospitals.
Authorities say there's no indication of trouble in L.A., but they're beefing up security as a precaution. Police remind people to stay vigilant and, as always, "if you see something, say something."