LAKE ELSINORE (CNS) - Five people were injured today, including three children, in a collision between a school bus and cargo van in Lake Elsinore.The crash happened about 7:30 a.m. at the intersection of Grand Avenue and Morro Way, according to the California Highway Patrol.Officer Mike Lassig told City News Service that a 38-year-old man at the wheel of a Chevrolet Express van was going eastbound on Morro, approaching a stop sign, when the Lake Elsinore Unified School District bus, carrying 10 children, headed into the intersection going south on Grand.Lassig said it's unclear what happened next, but the "van and school bus collided." Witnesses at the scene indicated the van driver may have plowed through the stop sign, and Lassig confirmed that investigators are examining th