(Sheridan, WI)  --  Law enforcement in western Wisconsin are investigating a homicide with four victims in the Town of Sheridan.  The Dunn County Sheriff's Office says the victims were found dead Sunday inside a black S-U-V with Minnesota license plates in cornfield.  Deputies say the victims do not appear to have any connection to the area.  Investigators say there may have been a second dark colored S-U-V traveling with the black vehicle.  Anyone with information is asked to call Dunn County authorities.