PRESTON - Two people have died and a third person has been injured in a head-on crash in south-central Kansas. The patrol says the van then continued into oncoming traffic and collided head-on with a car. Killed in the crash was 32-year-old Alan Stagg, of Salina, who was a passenger in the van, and 39-year-old Teresa Roach, of Pratt, who was driving the car. The Kansas State Highway Patrol says the crash happened Thursday morning when a full-size van crossed the center line on Kansas 61 and sideswiped a tractor-trailer. The car and van came to rest in a ditch.