A Danbury man has been arrested for allegedly sexually assaulting an eight-year-old child.  Police charged 41-year old   Daniel Plaza Quiroz Tuesday on an outstanding warrant.  The warrant was issued as a result of an investigation earlier this month by members of the Special Victims Unit.  Quiroz was taken into custody without incident and arraigned on three counts of Sexual Assault.  He was also charged with two counts each of Impairing Morals of a minor and Risk of Injury to a Minor – Sexual Contact.