Six people were injured Thursday when an explosion sparked a fire in Hayward, officials said. The explosion and fire occurred along the 800 block of Lewelling Boulevard, the Alameda County Fire Department said. Deputy Chief Ryan Nishimoto said firefighters responded to the scene at about 9:38 a.m. and found multiple buildings on fire. The six victims were transported to local hospitals, Nishimoto said. Their conditions weren’t immediately known. The cause of the explosion wasn’t immediately known. Further information wasn’t immediatley available. This is a developing story. Details may change as more information becomes available. Stay tuned for updates. ...read more read less