Laramie County Sheriff's Deputies found a man's body in a reservoir east of Cheyenne.
Spokesperson Capt. Linda Gesell says deputies spotted the body of 19 year old Justin Robinson Sunday in the Wyoming Hereford Ranch Reservoir #1 while responding to a report of a burned vehicle.
The death was ruled a homicide with one gunshot wound to the head.
Thursday sheriff's deputies arrested a 17-year-old in connection with the homicide.
Deputies also ask for the public's help in locating Armando Raul Ramirez Serna.