story for us. what can you tell us? >> reporter: authorities working furiously to solve this mystery. the fbi has been brought in to help. jacoby jacoby's death marks the first homicide the small colorado town has seen in some eight years and now that the shootings are linked people say they are scared. two random shootings, authorities now say are linked and fears in colorado there's a sniper on the loose. >> be vigilant. be aware of surroundings. see what's going on. >> reporter: the warping came friday as police revealed there's new evidence connecting the fatal shooting of 48-year-old john jacoby to the shooting of 20-year-old corey romero. police won't say how they are linked but appear the victims appear arbitrary. >> is there any indication the victims knew each other? >> no indication of that at all. >> reporter: jacoby was shot while riding his bike and a