DURANGO — Two hunters from Pennsylvania were trying to lure an elk in southwestern Colorado when one of them mistook a bow hunter for prey and fatally shot him, according to an arrest affidavit. Gregory Gabrisch, 31, of Houston, died from a gunshot wound in the San Juan National Forest north of Rico on Friday morning, and one of the Pennsylvania hunters was arrested on suspicion of criminally negligent homicide, a felony. The man who was arrested was hunting with a .50-caliber black powder rifle as his partner used a calling device to lure elk into range, The Durango Herald reported.