MADISON, Wis. (AP) – A Fitchburg man has died after being beaten with a baseball bat in Mount Horeb.  The Dane County Sheriff’s Office says 20-year-old Ryan M. Smith died Saturday morning at UW Hospital. Smith suffered skull fractures and lung injuries in the beating early last Tuesday. Authorities have said drugs may have played a role in the violence.  Authorities are holding an 18-year-old man on suspicion of attempted first-degree intentional homicide. His bail was set Friday at $1 million, but Assistant District Attorney Rachel Sattler delayed formally charging him Friday, saying the charge likely would be upgraded to homicide.  The suspect has claimed self-defense, and has another hearing set for this coming Tuesday.