trying to answer. the shootings have killed one and injured two others. >> reporter: a mystery on colorado roads. >> he was just here yesterday and the next day, he's gone. >> reporter: 48-year-old john jacoby dead while riding his bike. a passing driver finds him laying in the roadway of a rural town of windsor, he was shot twice. >> confirmed it was a homicide sfwlrks. >> reporter: it's the town's first homicide in eight years. and adding to the mystery, jacoby is not the first victim. >> here is where the bullet entered and exited. >> reporter: earlier, this girl was shot while driving.