DYERSVILLE, Iowa (AP) – The Dubuque County Sheriff’s Department is investigating the death of a Dyersville infant. Sheriff’s deputies, Dyersville police and Dyersville rescue workers were called to a home on the city’s northwest side Friday. The infant was pronounced dead at the scene. Officials say the cause of death is not known. An autopsy will be performed at the State Medical Examiner’s Office in Ankeny.