Police are investigating a hit-and-run motorcycle accident in Casselberry that sent a rider to the hospital with serious injuries. The accident occurred at State Road 436 and Casselton Drive, just north of Aloma Avenue. Police are looking for the driver of a black SUV or sedan who struck the rider and then fled the scene. They believe that the motorcyclist and the driver who struck him were traveling side-by-side in separate lanes when the driver may have swerved into the rider’s lane to avoid construction work in the roadway. They believe that the maneuver caused the driver to collide with and seriously injure the rider. Anyone with any information about the accident is asked to contact the Casselberry Police Department.