DAVENPORT, Iowa (AP) — More than 40 years after an 18-year-old high school student’s body was found outside an Iowa shopping mall, jurors Monday convicted a man of murder in her death.

It took jurors about three hours to convict Jerry Burns, 66, of first-degree murder in the Dec. 19, 1979, stabbing death of Michelle Martinko, 18. After searching for hours, police found her body in the early morning hours in her parent’s Buick parked outside a Cedar Rapids shopping mall.

Her lungs and aorta were pierced, and she lost about a third of her blood, according to testimony.

Police arrested Burns on Dec. 19, 2018, at his Manchester, Iowa, business — the 39th anniversary of Martinko’s death. Burns was linked to the crime by DNA evidence that indicated he was at the scene of her killing.

During the trial, prosecutors displayed Martinko’s black, bloodstained dress draped over a mannequin.

Families of both Burns and Martinko cried when the verdict was read.

In a statement, Cedar Rapids Police Chief Wayne Jerman credited officers and investigators for tenacity and dedication in making an arrest.