SPARTA, Wis. (AP) – Authorities in western Wisconsin have released the name of a woman whose body was found in a burning car last month.   Monroe County Sheriff Pete Quirin says the woman was 33-year-old Karen Koca of New Lisbon.  Quirin says the Wisconsin State Crime Laboratory used DNA analysis to identify Koca. The cause of death has yet to be determined.  The burning car was discovered Sept. 18 north of Norwalk. Investigators have determined the victim was not the owner of the 1998 Pontiac Grand Prix with Minnesota license plates.   Authorities are treating the death as a homicide.