OKLAHOMA CITY (KFOR) - Police are investigating after someone was hit and killed by a car in downtown Oklahoma City. According to Oklahoma City Police, officers responded to the area of W. Main St. and N. Douglas Ave. around 3:30 a.m. Wednesday morning. Upon arrival, officers found one person who had been hit and killed by a car. The driver of the vehicle stayed on scene and is cooperating with police. Police say that portion of Main St. between the 1100 and 1400 blocks could be closed until 7 a.m. No more information is available as the investigation continues.