Virginia State Police (VSP) have identified a man who was hit and killed by a tractor-trailer early last Tuesday and revealed that drugs are being investigated as a contributing factor in the crash.A news release from VSP revealed that Christopher I. LaForce, of Weber City, had been in the roadway when a 2013 Mack tractor-trailer traveling north on U.S. 23 hit him. He was taken to Holston Valley Hospital where he died.