The couple's bodies were found Friday night in a car near the 18th and Vine Jazz district. Relatives told The Kansas City Star the victims were 19-year-old Erin R. Williamson and her boyfriend, 17-year-old Aaron L. Benton.
Police initially suspected suicide but announced it was a homicide investigation after finding no gun inside the car.
Relatives say no one had been able to find the couple, who lived together, since Tuesday.
Their bodies were found by a maintenance man.
(Copyright 2009 by The Associated Press. All Rights Reserved.)