Louisville Metro Police say they have no suspects in their investigation into a Derby weekend homicide on the Churchill Downs backside. The body of 48 year old Adan Fabian Perez was discovered early yesterday morning in a barn. Officials say he lived and worked on the backside as a groom.LMPD homicide detective Lt. Barry Wilkerson says there are indications that Perez was involved in an altercation, but an autopsy today will determine the exact cause of death.“Mr. Perez was a father, a brother, obviously the son of someone,” Wilkerson said at a press conference this morning. “That’s the purpose and the way we investigate the case. I know others have tried to tie it to the Derby and Churchill Downs. I believe this is an isolated incident of a tragic situation that took place, and that’s how we’re going to approach it.”Wilkerson says police continue to gather information from backside workers at Churchill Downs.