Someone knows something but they aren’t talking. The Washoe County Sheriff’s office is seeking witnesses in connection with a double murder in Sun Valley. 18 year old Erik Garcia-Holstone, and a 15-year-old boy died in the shooting on Sidehill Drive and Quartz Lane. It happened at approximately 3:30am, Sunday, August 18th. A third victim, a boy, was wounded in the attack. . Investigators say there was at least one large gathering in the area at the time of the shooting, so they hope any witnesses to the shooting will come forward.  Secret Witness is offering a $5,000 reward for information leading to the arrest and prosecution of the killer.