2008_10_newark.jpgA 22-year-old Newark man was arrested yesterday for beating and sexually assaulting a 9-month-old infant who died Friday after going into cardiac arrest in what has been ruled a homicide. After an autopsy is released as soon as today, police say charges may be upgraded against Everett Sheppard, the boyfriend of the late infant Victoria Madsen's mother. No charges have been made against the mother, 19-year-old Sheila Troutman, but her other son, a 2-year-old, has been taken into custody by the Division of Youth.