Spokane Police believe they have solved the brutal murder of 12-year-old Marsi Belecz. Marsi was found stabbed to death back in August of 1985. 

Police say it was DNA technology that led them to Marsi's killer. He is no longer alive.

Spokane Police identified the killer as Clayton Giese, a Montana native. Giese was 22-years-old at the time of the rape and murder. He died in a car crash in 1989. His body was exhumed this year, and DNA recovered matched what was found on Marsi’s remains.

During the investigation, detectives looked closely at 87 suspects, 12 were cleared by DNA.

KHQ's Hayley Guenthner featured Marsi's case last March in her Q6 Cold Case series. She again spoke with Marsi's sisters who are trying to come with terms with the news they had waited to hear for decades.