Student s at Marshall County High School returned to class Friday following Tuesday’s shooting. A 15-year-old student open fired in the high school’s hallway Tuesday morning killing two of his classmates and wounding 21 others. The Kentucky State Police say their investigation has concluded. The suspect was in court on Thursday and is facing two charges of murder in the first-degree and 21 charges of aggravated assault. Paperwork is being filed to try and try the student as an adult. The suspect is currently at a juvenile detention center.