Young Kavila murder: Des Plaines police say DNA led to arrest after 21-year manhunt WLS Share: DES PLAINES, Ill. (WLS) -- Charges were announced Thursday in a suburban cold case dating back to 1999. After a 21-year man hunt, it was DNA swab that finally led to the break in the case. Luis Rodriguez-Mena was arrested more than 20 years after police say he murdered Young Kavila inside of her Des Plaines apartment. Retired Des Plaines Detective Randy Aikin was one of the first on scene that night. "When I was there that evening, I never would have believed that this would have taken 21 years to resolve," Aikin said.