Charlottesville and Albemarle Police as well as city and county deputies and VSP are tracking suspect in attempted murder in the area south of I64 and Rt20. Suspect fled after attempted traffic stop. Ops are on talkaround Blue (analog). VSP has helicopter on scene, bloodhound attempting track. Suspect was spotted in creek heading north at around 4:45 but hasn't been seen since. Rt 20 traffic stopped at Rt 53 causing big delays.