RIYADH — An Arab expatriate was killed and another seriously injured when their cars collided head-on in Riyadh's Afra Center on Friday. Traffic police, Red Crescent ambulances and Civil Defense teams rushed to the scene and pulled out the body that was trapped in the wreckage. The survivor was taken to King Abdullah Hospital in Bisha. Traffic police in Riyadh also reported that four people were seriously injured in an accident on Saturday morning on Imam Abdullah Bin Saud Road in Riyadh after a driver braked suddenly, causing the vehicle behind to crash into him. Red Crescent paramedic teams rushed the injured victims to King Saud Medical City in Riyadh.