LOUISVILLE, KY—The Louisville Metro Police Department said Thursday it is following all leads in the murder of track worker Adan Fabian Perez, even bringing in Derby horse Daddy Long Legs for questioning as a horse of interest. "While the ongoing investigation prevents us from revealing more at this time, we can tell you that hoofprints were prevalent in and around the stable where the body was discovered," said police spokesman Dwight Mitchell, adding that while no charges have been filed, the horse will be kept in a holding stable for the evening. "Daddy Long Legs has thus far refused to speak to investigators, but we're hopeful that once his court-appointed attorney horse arrives he will be more cooperative." Mitchell concluded his press conference by emphasizing the challenging nature of the investigation, citing the vast numbers of people, horses, mice, flies, crows, spiders, hawks, jockeys, millipedes, raccoons, ticks, earthworms, and stray cats that had access to the barn where Perez was found.