Nine people were injured, one critically, when an SUV driven by a suspected human smuggler crashed Sunday while being chased by Border Patrol agents near Lake Morena in East County. The agents tried to pull over the Chevrolet Trailblazer, which was headed east on state Route 94 in the Campo area, about 11:40 a.m., said Mark Endicott, a supervisory Border Patrol agent for the San Diego sector.