Louisville police say a Louisville Gas and Electric Co. employee fatally shot his supervisor at a service center in Louisville before turning the gun on himself. Authorities tell the Courier-Journal that 52 year old Jeremy W. "Billy" Davis opened fire on 53 year old supervisor Andre Johnson, then took his own life. Sgt. Robert Biven says the men worked in "close proximity'' to each other at the center on Jennings Lane, but police have not said what may have led to the shooting. The center in southeast Louisville is used to dispatch crews for work at substations and some gas operations. Police were also investigating the fatal shootings of two men in the Smoketown neighborhood Tuesday morning in an unrelated case.