The Greene County Sheriff’s Office has opened an investigation into the theft of a firearm. On Monday, a deputy was notified at approximately 11 a.m. that the caller had left a 9mm handgun at the Slininger Woods Gun Range, west of Jefferson. There are currently no suspects in the case and no video surveillance on site that law enforcement can reference as the owner had not noticed the missing weapon for several days. Anyone with information on the missing gun can contact the Greene County Sheriff’s Office at 515-386-2136.