Lexington police are investigating a serious crash that has two roads blocked. A car hit a house on the corner of Kees Road and Russell Cave around 6 a.m. Thursday. Police said arriving officers found one man on the ground who was suffering life-threatening injuries. The coroner was contacted a short time later. One passenger was found in the car. Police said that person had minor injuries. Officers are still looking for the driver who fled the scene on foot.