Al-AHSA — An elementary school girl was killed and her sister sustained serious injuries after being hit by their school bus moments after exiting the vehicle on Monday. Eastern Province Red Crescent spokesman, Fahd Othman, said police notified the Red Crescent of the incident and paramedics attended the scene but found one girl already dead while the other was suffering from serious injuries. He added the girls were 7 and 9 and they were taken to King Fahd Hospital in Hafouf, while police have begun an investigation into the incident.